| Message ID | 20191120104425.407213-6-cmaiolino@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Remove/convert more kmem_* wrappers | expand |
On Wed, Nov 20, 2019 at 11:44:25AM +0100, Carlos Maiolino wrote: > Use kmalloc() directly. > > There is no logic change on kmem_alloc() since it's being removed soon, but for > now, kmem_alloc_io() and kmem_alloc_large() still have use for kmem_alloc() due > their fallback to vmalloc() and also the alignment check, so we can't completely > remove it here. > But, there is no need to export kmem_alloc() to the whole XFS driver anymore, so, > convert kmem_alloc() into a static, local function __kmem_alloc(). > > Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com> Looks fine, I'll give it a spin, Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> --D > --- > V2: > - Rephrase commit log > > fs/xfs/kmem.c | 8 ++++---- > fs/xfs/kmem.h | 1 - > fs/xfs/libxfs/xfs_attr_leaf.c | 6 +++--- > fs/xfs/libxfs/xfs_bmap.c | 2 +- > fs/xfs/libxfs/xfs_da_btree.c | 4 +++- > fs/xfs/libxfs/xfs_defer.c | 4 ++-- > fs/xfs/libxfs/xfs_dir2.c | 2 +- > fs/xfs/libxfs/xfs_dir2_block.c | 2 +- > fs/xfs/libxfs/xfs_dir2_sf.c | 8 ++++---- > fs/xfs/libxfs/xfs_inode_fork.c | 10 ++++++---- > fs/xfs/libxfs/xfs_refcount.c | 9 +++++---- > fs/xfs/libxfs/xfs_rmap.c | 2 +- > fs/xfs/scrub/bitmap.c | 7 ++++--- > fs/xfs/scrub/btree.c | 4 ++-- > fs/xfs/scrub/refcount.c | 4 ++-- > fs/xfs/xfs_attr_inactive.c | 2 +- > fs/xfs/xfs_attr_list.c | 2 +- > fs/xfs/xfs_buf.c | 5 +++-- > fs/xfs/xfs_filestream.c | 2 +- > fs/xfs/xfs_inode.c | 2 +- > fs/xfs/xfs_iwalk.c | 2 +- > fs/xfs/xfs_log_recover.c | 7 ++++--- > fs/xfs/xfs_qm.c | 3 ++- > fs/xfs/xfs_rtalloc.c | 2 +- > fs/xfs/xfs_super.c | 2 +- > 25 files changed, 55 insertions(+), 47 deletions(-) > > diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c > index 6e10e565632c..79467813d810 100644 > --- a/fs/xfs/kmem.c > +++ b/fs/xfs/kmem.c > @@ -8,8 +8,8 @@ > #include "xfs_message.h" > #include "xfs_trace.h" > > -void * > -kmem_alloc(size_t size, xfs_km_flags_t flags) > +static void * > +__kmem_alloc(size_t size, xfs_km_flags_t flags) > { > int retries = 0; > gfp_t lflags = kmem_flags_convert(flags); > @@ -72,7 +72,7 @@ kmem_alloc_io(size_t size, int align_mask, xfs_km_flags_t flags) > if (WARN_ON_ONCE(align_mask >= PAGE_SIZE)) > align_mask = PAGE_SIZE - 1; > > - ptr = kmem_alloc(size, flags | KM_MAYFAIL); > + ptr = __kmem_alloc(size, flags | KM_MAYFAIL); > if (ptr) { > if (!((uintptr_t)ptr & align_mask)) > return ptr; > @@ -88,7 +88,7 @@ kmem_alloc_large(size_t size, xfs_km_flags_t flags) > > trace_kmem_alloc_large(size, flags, _RET_IP_); > > - ptr = kmem_alloc(size, flags | KM_MAYFAIL); > + ptr = __kmem_alloc(size, flags | KM_MAYFAIL); > if (ptr) > return ptr; > return __kmem_vmalloc(size, flags); > diff --git a/fs/xfs/kmem.h b/fs/xfs/kmem.h > index a18c27c99721..78a54839430a 100644 > --- a/fs/xfs/kmem.h > +++ b/fs/xfs/kmem.h > @@ -52,7 +52,6 @@ kmem_flags_convert(xfs_km_flags_t flags) > return lflags; > } > > -extern void *kmem_alloc(size_t, xfs_km_flags_t); > extern void *kmem_alloc_io(size_t size, int align_mask, xfs_km_flags_t flags); > extern void *kmem_alloc_large(size_t size, xfs_km_flags_t); > > diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c > index 67de68584224..807950eca17a 100644 > --- a/fs/xfs/libxfs/xfs_attr_leaf.c > +++ b/fs/xfs/libxfs/xfs_attr_leaf.c > @@ -885,7 +885,7 @@ xfs_attr_shortform_to_leaf( > ifp = dp->i_afp; > sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data; > size = be16_to_cpu(sf->hdr.totsize); > - tmpbuffer = kmem_alloc(size, 0); > + tmpbuffer = kmalloc(size, GFP_KERNEL | __GFP_NOFAIL); > ASSERT(tmpbuffer != NULL); > memcpy(tmpbuffer, ifp->if_u1.if_data, size); > sf = (xfs_attr_shortform_t *)tmpbuffer; > @@ -1073,7 +1073,7 @@ xfs_attr3_leaf_to_shortform( > > trace_xfs_attr_leaf_to_sf(args); > > - tmpbuffer = kmem_alloc(args->geo->blksize, 0); > + tmpbuffer = kmalloc(args->geo->blksize, GFP_KERNEL | __GFP_NOFAIL); > if (!tmpbuffer) > return -ENOMEM; > > @@ -1534,7 +1534,7 @@ xfs_attr3_leaf_compact( > > trace_xfs_attr_leaf_compact(args); > > - tmpbuffer = kmem_alloc(args->geo->blksize, 0); > + tmpbuffer = kmalloc(args->geo->blksize, GFP_KERNEL | __GFP_NOFAIL); > memcpy(tmpbuffer, bp->b_addr, args->geo->blksize); > memset(bp->b_addr, 0, args->geo->blksize); > leaf_src = (xfs_attr_leafblock_t *)tmpbuffer; > diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c > index 37596e49b92e..fc5bed95bd44 100644 > --- a/fs/xfs/libxfs/xfs_bmap.c > +++ b/fs/xfs/libxfs/xfs_bmap.c > @@ -6045,7 +6045,7 @@ __xfs_bmap_add( > bmap->br_blockcount, > bmap->br_state); > > - bi = kmem_alloc(sizeof(struct xfs_bmap_intent), KM_NOFS); > + bi = kmalloc(sizeof(struct xfs_bmap_intent), GFP_NOFS | __GFP_NOFAIL); > INIT_LIST_HEAD(&bi->bi_list); > bi->bi_type = type; > bi->bi_owner = ip; > diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c > index 29c25d1b3b76..efe84c636bd3 100644 > --- a/fs/xfs/libxfs/xfs_da_btree.c > +++ b/fs/xfs/libxfs/xfs_da_btree.c > @@ -2152,7 +2152,9 @@ xfs_da_grow_inode_int( > * If we didn't get it and the block might work if fragmented, > * try without the CONTIG flag. Loop until we get it all. > */ > - mapp = kmem_alloc(sizeof(*mapp) * count, 0); > + mapp = kmalloc(sizeof(*mapp) * count, > + GFP_KERNEL | __GFP_NOFAIL); > + > for (b = *bno, mapi = 0; b < *bno + count; ) { > nmap = min(XFS_BMAP_MAX_NMAP, count); > c = (int)(*bno + count - b); > diff --git a/fs/xfs/libxfs/xfs_defer.c b/fs/xfs/libxfs/xfs_defer.c > index 27c3d150068a..7dd16f208b82 100644 > --- a/fs/xfs/libxfs/xfs_defer.c > +++ b/fs/xfs/libxfs/xfs_defer.c > @@ -516,8 +516,8 @@ xfs_defer_add( > dfp = NULL; > } > if (!dfp) { > - dfp = kmem_alloc(sizeof(struct xfs_defer_pending), > - KM_NOFS); > + dfp = kmalloc(sizeof(struct xfs_defer_pending), > + GFP_NOFS | __GFP_NOFAIL); > dfp->dfp_type = type; > dfp->dfp_intent = NULL; > dfp->dfp_done = NULL; > diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c > index c2deda036271..4777356b4f83 100644 > --- a/fs/xfs/libxfs/xfs_dir2.c > +++ b/fs/xfs/libxfs/xfs_dir2.c > @@ -331,7 +331,7 @@ xfs_dir_cilookup_result( > !(args->op_flags & XFS_DA_OP_CILOOKUP)) > return -EEXIST; > > - args->value = kmem_alloc(len, KM_NOFS | KM_MAYFAIL); > + args->value = kmalloc(len, GFP_NOFS | __GFP_RETRY_MAYFAIL); > if (!args->value) > return -ENOMEM; > > diff --git a/fs/xfs/libxfs/xfs_dir2_block.c b/fs/xfs/libxfs/xfs_dir2_block.c > index 766f282b706a..54ae07a432e4 100644 > --- a/fs/xfs/libxfs/xfs_dir2_block.c > +++ b/fs/xfs/libxfs/xfs_dir2_block.c > @@ -1083,7 +1083,7 @@ xfs_dir2_sf_to_block( > * Copy the directory into a temporary buffer. > * Then pitch the incore inode data so we can make extents. > */ > - sfp = kmem_alloc(ifp->if_bytes, 0); > + sfp = kmalloc(ifp->if_bytes, GFP_KERNEL | __GFP_NOFAIL); > memcpy(sfp, oldsfp, ifp->if_bytes); > > xfs_idata_realloc(dp, -ifp->if_bytes, XFS_DATA_FORK); > diff --git a/fs/xfs/libxfs/xfs_dir2_sf.c b/fs/xfs/libxfs/xfs_dir2_sf.c > index f4de4e7b10ef..43d72aebb9cf 100644 > --- a/fs/xfs/libxfs/xfs_dir2_sf.c > +++ b/fs/xfs/libxfs/xfs_dir2_sf.c > @@ -276,7 +276,7 @@ xfs_dir2_block_to_sf( > * format the data into. Once we have formatted the data, we can free > * the block and copy the formatted data into the inode literal area. > */ > - sfp = kmem_alloc(mp->m_sb.sb_inodesize, 0); > + sfp = kmalloc(mp->m_sb.sb_inodesize, GFP_KERNEL | __GFP_NOFAIL); > memcpy(sfp, sfhp, xfs_dir2_sf_hdr_size(sfhp->i8count)); > > /* > @@ -530,7 +530,7 @@ xfs_dir2_sf_addname_hard( > */ > sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; > old_isize = (int)dp->i_d.di_size; > - buf = kmem_alloc(old_isize, 0); > + buf = kmalloc(old_isize, GFP_KERNEL | __GFP_NOFAIL); > oldsfp = (xfs_dir2_sf_hdr_t *)buf; > memcpy(oldsfp, sfp, old_isize); > /* > @@ -1162,7 +1162,7 @@ xfs_dir2_sf_toino4( > * Don't want xfs_idata_realloc copying the data here. > */ > oldsize = dp->i_df.if_bytes; > - buf = kmem_alloc(oldsize, 0); > + buf = kmalloc(oldsize, GFP_KERNEL | __GFP_NOFAIL); > oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; > ASSERT(oldsfp->i8count == 1); > memcpy(buf, oldsfp, oldsize); > @@ -1235,7 +1235,7 @@ xfs_dir2_sf_toino8( > * Don't want xfs_idata_realloc copying the data here. > */ > oldsize = dp->i_df.if_bytes; > - buf = kmem_alloc(oldsize, 0); > + buf = kmalloc(oldsize, GFP_KERNEL | __GFP_NOFAIL); > oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; > ASSERT(oldsfp->i8count == 0); > memcpy(buf, oldsfp, oldsize); > diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c > index 82799dddf97d..62c305654657 100644 > --- a/fs/xfs/libxfs/xfs_inode_fork.c > +++ b/fs/xfs/libxfs/xfs_inode_fork.c > @@ -153,7 +153,8 @@ xfs_init_local_fork( > > if (size) { > real_size = roundup(mem_size, 4); > - ifp->if_u1.if_data = kmem_alloc(real_size, KM_NOFS); > + ifp->if_u1.if_data = kmalloc(real_size, > + GFP_NOFS | __GFP_NOFAIL); > memcpy(ifp->if_u1.if_data, data, size); > if (zero_terminate) > ifp->if_u1.if_data[size] = '\0'; > @@ -308,7 +309,7 @@ xfs_iformat_btree( > } > > ifp->if_broot_bytes = size; > - ifp->if_broot = kmem_alloc(size, KM_NOFS); > + ifp->if_broot = kmalloc(size, GFP_NOFS | __GFP_NOFAIL); > ASSERT(ifp->if_broot != NULL); > /* > * Copy and convert from the on-disk structure > @@ -373,7 +374,8 @@ xfs_iroot_realloc( > */ > if (ifp->if_broot_bytes == 0) { > new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, rec_diff); > - ifp->if_broot = kmem_alloc(new_size, KM_NOFS); > + ifp->if_broot = kmalloc(new_size, > + GFP_NOFS | __GFP_NOFAIL); > ifp->if_broot_bytes = (int)new_size; > return; > } > @@ -414,7 +416,7 @@ xfs_iroot_realloc( > else > new_size = 0; > if (new_size > 0) { > - new_broot = kmem_alloc(new_size, KM_NOFS); > + new_broot = kmalloc(new_size, GFP_NOFS | __GFP_NOFAIL); > /* > * First copy over the btree block header. > */ > diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c > index 07894c53e753..6a89443da50a 100644 > --- a/fs/xfs/libxfs/xfs_refcount.c > +++ b/fs/xfs/libxfs/xfs_refcount.c > @@ -1188,8 +1188,8 @@ __xfs_refcount_add( > type, XFS_FSB_TO_AGBNO(tp->t_mountp, startblock), > blockcount); > > - ri = kmem_alloc(sizeof(struct xfs_refcount_intent), > - KM_NOFS); > + ri = kmalloc(sizeof(struct xfs_refcount_intent), > + GFP_NOFS | __GFP_NOFAIL); > INIT_LIST_HEAD(&ri->ri_list); > ri->ri_type = type; > ri->ri_startblock = startblock; > @@ -1584,7 +1584,7 @@ struct xfs_refcount_recovery { > /* Stuff an extent on the recovery list. */ > STATIC int > xfs_refcount_recover_extent( > - struct xfs_btree_cur *cur, > + struct xfs_btree_cur *cur, > union xfs_btree_rec *rec, > void *priv) > { > @@ -1596,7 +1596,8 @@ xfs_refcount_recover_extent( > return -EFSCORRUPTED; > } > > - rr = kmem_alloc(sizeof(struct xfs_refcount_recovery), 0); > + rr = kmalloc(sizeof(struct xfs_refcount_recovery), > + GFP_KERNEL | __GFP_NOFAIL); > xfs_refcount_btrec_to_irec(rec, &rr->rr_rrec); > list_add_tail(&rr->rr_list, debris); > > diff --git a/fs/xfs/libxfs/xfs_rmap.c b/fs/xfs/libxfs/xfs_rmap.c > index 38e9414878b3..0e1e8cbb8862 100644 > --- a/fs/xfs/libxfs/xfs_rmap.c > +++ b/fs/xfs/libxfs/xfs_rmap.c > @@ -2286,7 +2286,7 @@ __xfs_rmap_add( > bmap->br_blockcount, > bmap->br_state); > > - ri = kmem_alloc(sizeof(struct xfs_rmap_intent), KM_NOFS); > + ri = kmalloc(sizeof(struct xfs_rmap_intent), GFP_NOFS | __GFP_NOFAIL); > INIT_LIST_HEAD(&ri->ri_list); > ri->ri_type = type; > ri->ri_owner = owner; > diff --git a/fs/xfs/scrub/bitmap.c b/fs/xfs/scrub/bitmap.c > index cabde1c4c235..5787d4f74e71 100644 > --- a/fs/xfs/scrub/bitmap.c > +++ b/fs/xfs/scrub/bitmap.c > @@ -25,7 +25,8 @@ xfs_bitmap_set( > { > struct xfs_bitmap_range *bmr; > > - bmr = kmem_alloc(sizeof(struct xfs_bitmap_range), KM_MAYFAIL); > + bmr = kmalloc(sizeof(struct xfs_bitmap_range), > + GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (!bmr) > return -ENOMEM; > > @@ -181,8 +182,8 @@ xfs_bitmap_disunion( > * Deleting from the middle: add the new right extent > * and then shrink the left extent. > */ > - new_br = kmem_alloc(sizeof(struct xfs_bitmap_range), > - KM_MAYFAIL); > + new_br = kmalloc(sizeof(struct xfs_bitmap_range), > + GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (!new_br) { > error = -ENOMEM; > goto out; > diff --git a/fs/xfs/scrub/btree.c b/fs/xfs/scrub/btree.c > index bed40b605076..857f813681ed 100644 > --- a/fs/xfs/scrub/btree.c > +++ b/fs/xfs/scrub/btree.c > @@ -429,8 +429,8 @@ xchk_btree_check_owner( > * later scanning. > */ > if (cur->bc_btnum == XFS_BTNUM_BNO || cur->bc_btnum == XFS_BTNUM_RMAP) { > - co = kmem_alloc(sizeof(struct check_owner), > - KM_MAYFAIL); > + co = kmalloc(sizeof(struct check_owner), > + GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (!co) > return -ENOMEM; > co->level = level; > diff --git a/fs/xfs/scrub/refcount.c b/fs/xfs/scrub/refcount.c > index 985724e81ebf..f5c2e320e416 100644 > --- a/fs/xfs/scrub/refcount.c > +++ b/fs/xfs/scrub/refcount.c > @@ -125,8 +125,8 @@ xchk_refcountbt_rmap_check( > * is healthy each rmap_irec we see will be in agbno order > * so we don't need insertion sort here. > */ > - frag = kmem_alloc(sizeof(struct xchk_refcnt_frag), > - KM_MAYFAIL); > + frag = kmalloc(sizeof(struct xchk_refcnt_frag), > + GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (!frag) > return -ENOMEM; > memcpy(&frag->rm, rec, sizeof(frag->rm)); > diff --git a/fs/xfs/xfs_attr_inactive.c b/fs/xfs/xfs_attr_inactive.c > index 8351b3b611ac..42d7d8cbdb6e 100644 > --- a/fs/xfs/xfs_attr_inactive.c > +++ b/fs/xfs/xfs_attr_inactive.c > @@ -148,7 +148,7 @@ xfs_attr3_leaf_inactive( > * Allocate storage for a list of all the "remote" value extents. > */ > size = count * sizeof(xfs_attr_inactive_list_t); > - list = kmem_alloc(size, 0); > + list = kmalloc(size, GFP_KERNEL | __GFP_NOFAIL); > > /* > * Identify each of the "remote" value extents. > diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c > index e1d1c4eb9e69..2a475ca6e353 100644 > --- a/fs/xfs/xfs_attr_list.c > +++ b/fs/xfs/xfs_attr_list.c > @@ -116,7 +116,7 @@ xfs_attr_shortform_list( > * It didn't all fit, so we have to sort everything on hashval. > */ > sbsize = sf->hdr.count * sizeof(*sbuf); > - sbp = sbuf = kmem_alloc(sbsize, KM_NOFS); > + sbp = sbuf = kmalloc(sbsize, GFP_NOFS | __GFP_NOFAIL); > > /* > * Scan the attribute list for the rest of the entries, storing > diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c > index c70122fbc2a8..7428fe6a322c 100644 > --- a/fs/xfs/xfs_buf.c > +++ b/fs/xfs/xfs_buf.c > @@ -274,8 +274,9 @@ _xfs_buf_get_pages( > if (page_count <= XB_PAGES) { > bp->b_pages = bp->b_page_array; > } else { > - bp->b_pages = kmem_alloc(sizeof(struct page *) * > - page_count, KM_NOFS); > + bp->b_pages = kmalloc(sizeof(struct page *) * > + page_count, > + GFP_NOFS | __GFP_NOFAIL); > if (bp->b_pages == NULL) > return -ENOMEM; > } > diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c > index 9778e4e69e07..38b634cef1ed 100644 > --- a/fs/xfs/xfs_filestream.c > +++ b/fs/xfs/xfs_filestream.c > @@ -247,7 +247,7 @@ xfs_filestream_pick_ag( > return 0; > > err = -ENOMEM; > - item = kmem_alloc(sizeof(*item), KM_MAYFAIL); > + item = kmalloc(sizeof(*item), GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (!item) > goto out_put_ag; > > diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c > index 297b2a73f285..1d1fe67ad237 100644 > --- a/fs/xfs/xfs_inode.c > +++ b/fs/xfs/xfs_inode.c > @@ -3493,7 +3493,7 @@ xfs_iflush_cluster( > pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); > > cilist_size = igeo->inodes_per_cluster * sizeof(struct xfs_inode *); > - cilist = kmem_alloc(cilist_size, KM_MAYFAIL|KM_NOFS); > + cilist = kmalloc(cilist_size, GFP_NOFS | __GFP_RETRY_MAYFAIL); > if (!cilist) > goto out_put; > > diff --git a/fs/xfs/xfs_iwalk.c b/fs/xfs/xfs_iwalk.c > index e6006423e140..aa6bc0555d21 100644 > --- a/fs/xfs/xfs_iwalk.c > +++ b/fs/xfs/xfs_iwalk.c > @@ -152,7 +152,7 @@ xfs_iwalk_alloc( > > /* Allocate a prefetch buffer for inobt records. */ > size = iwag->sz_recs * sizeof(struct xfs_inobt_rec_incore); > - iwag->recs = kmem_alloc(size, KM_MAYFAIL); > + iwag->recs = kmalloc(size, GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (iwag->recs == NULL) > return -ENOMEM; > > diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c > index 5423171e0b7d..7bb53fbf32f6 100644 > --- a/fs/xfs/xfs_log_recover.c > +++ b/fs/xfs/xfs_log_recover.c > @@ -1962,7 +1962,7 @@ xlog_recover_buffer_pass1( > } > } > > - bcp = kmem_alloc(sizeof(struct xfs_buf_cancel), 0); > + bcp = kmalloc(sizeof(struct xfs_buf_cancel), GFP_KERNEL | __GFP_NOFAIL); > bcp->bc_blkno = buf_f->blf_blkno; > bcp->bc_len = buf_f->blf_len; > bcp->bc_refcount = 1; > @@ -2932,7 +2932,8 @@ xlog_recover_inode_pass2( > if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) { > in_f = item->ri_buf[0].i_addr; > } else { > - in_f = kmem_alloc(sizeof(struct xfs_inode_log_format), 0); > + in_f = kmalloc(sizeof(struct xfs_inode_log_format), > + GFP_KERNEL | __GFP_NOFAIL); > need_free = 1; > error = xfs_inode_item_format_convert(&item->ri_buf[0], in_f); > if (error) > @@ -4271,7 +4272,7 @@ xlog_recover_add_to_trans( > return 0; > } > > - ptr = kmem_alloc(len, 0); > + ptr = kmalloc(len, GFP_KERNEL | __GFP_NOFAIL); > memcpy(ptr, dp, len); > in_f = (struct xfs_inode_log_format *)ptr; > > diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c > index a2664afa10c3..2993af4a9935 100644 > --- a/fs/xfs/xfs_qm.c > +++ b/fs/xfs/xfs_qm.c > @@ -988,7 +988,8 @@ xfs_qm_reset_dqcounts_buf( > if (qip->i_d.di_nblocks == 0) > return 0; > > - map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), 0); > + map = kmalloc(XFS_DQITER_MAP_SIZE * sizeof(*map), > + GFP_KERNEL | __GFP_NOFAIL); > > lblkno = 0; > maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); > diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c > index 7f03b4ab3452..dfd419d402ea 100644 > --- a/fs/xfs/xfs_rtalloc.c > +++ b/fs/xfs/xfs_rtalloc.c > @@ -962,7 +962,7 @@ xfs_growfs_rt( > /* > * Allocate a new (fake) mount/sb. > */ > - nmp = kmem_alloc(sizeof(*nmp), 0); > + nmp = kmalloc(sizeof(*nmp), GFP_KERNEL | __GFP_NOFAIL); > /* > * Loop over the bitmap blocks. > * We will do everything one bitmap block at a time. > diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c > index cc1933dc652f..eee831681e9c 100644 > --- a/fs/xfs/xfs_super.c > +++ b/fs/xfs/xfs_super.c > @@ -1739,7 +1739,7 @@ static int xfs_init_fs_context( > { > struct xfs_mount *mp; > > - mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO); > + mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL | __GFP_NOFAIL); > if (!mp) > return -ENOMEM; > > -- > 2.23.0 >
On Wed, Nov 20, 2019 at 11:44:25AM +0100, Carlos Maiolino wrote: > Use kmalloc() directly. > > There is no logic change on kmem_alloc() since it's being removed soon, but for > now, kmem_alloc_io() and kmem_alloc_large() still have use for kmem_alloc() due > their fallback to vmalloc() and also the alignment check, so we can't completely > remove it here. > But, there is no need to export kmem_alloc() to the whole XFS driver anymore, so, > convert kmem_alloc() into a static, local function __kmem_alloc(). > > Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com> > --- > V2: > - Rephrase commit log > > fs/xfs/kmem.c | 8 ++++---- > fs/xfs/kmem.h | 1 - > fs/xfs/libxfs/xfs_attr_leaf.c | 6 +++--- > fs/xfs/libxfs/xfs_bmap.c | 2 +- > fs/xfs/libxfs/xfs_da_btree.c | 4 +++- > fs/xfs/libxfs/xfs_defer.c | 4 ++-- > fs/xfs/libxfs/xfs_dir2.c | 2 +- > fs/xfs/libxfs/xfs_dir2_block.c | 2 +- > fs/xfs/libxfs/xfs_dir2_sf.c | 8 ++++---- > fs/xfs/libxfs/xfs_inode_fork.c | 10 ++++++---- > fs/xfs/libxfs/xfs_refcount.c | 9 +++++---- > fs/xfs/libxfs/xfs_rmap.c | 2 +- > fs/xfs/scrub/bitmap.c | 7 ++++--- > fs/xfs/scrub/btree.c | 4 ++-- > fs/xfs/scrub/refcount.c | 4 ++-- > fs/xfs/xfs_attr_inactive.c | 2 +- > fs/xfs/xfs_attr_list.c | 2 +- > fs/xfs/xfs_buf.c | 5 +++-- > fs/xfs/xfs_filestream.c | 2 +- > fs/xfs/xfs_inode.c | 2 +- > fs/xfs/xfs_iwalk.c | 2 +- > fs/xfs/xfs_log_recover.c | 7 ++++--- > fs/xfs/xfs_qm.c | 3 ++- > fs/xfs/xfs_rtalloc.c | 2 +- > fs/xfs/xfs_super.c | 2 +- > 25 files changed, 55 insertions(+), 47 deletions(-) > > diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c > index 6e10e565632c..79467813d810 100644 > --- a/fs/xfs/kmem.c > +++ b/fs/xfs/kmem.c > @@ -8,8 +8,8 @@ > #include "xfs_message.h" > #include "xfs_trace.h" > > -void * > -kmem_alloc(size_t size, xfs_km_flags_t flags) > +static void * > +__kmem_alloc(size_t size, xfs_km_flags_t flags) > { > int retries = 0; > gfp_t lflags = kmem_flags_convert(flags); > @@ -72,7 +72,7 @@ kmem_alloc_io(size_t size, int align_mask, xfs_km_flags_t flags) > if (WARN_ON_ONCE(align_mask >= PAGE_SIZE)) > align_mask = PAGE_SIZE - 1; > > - ptr = kmem_alloc(size, flags | KM_MAYFAIL); > + ptr = __kmem_alloc(size, flags | KM_MAYFAIL); > if (ptr) { > if (!((uintptr_t)ptr & align_mask)) > return ptr; > @@ -88,7 +88,7 @@ kmem_alloc_large(size_t size, xfs_km_flags_t flags) > > trace_kmem_alloc_large(size, flags, _RET_IP_); > > - ptr = kmem_alloc(size, flags | KM_MAYFAIL); > + ptr = __kmem_alloc(size, flags | KM_MAYFAIL); > if (ptr) > return ptr; > return __kmem_vmalloc(size, flags); > diff --git a/fs/xfs/kmem.h b/fs/xfs/kmem.h > index a18c27c99721..78a54839430a 100644 > --- a/fs/xfs/kmem.h > +++ b/fs/xfs/kmem.h > @@ -52,7 +52,6 @@ kmem_flags_convert(xfs_km_flags_t flags) > return lflags; > } > > -extern void *kmem_alloc(size_t, xfs_km_flags_t); > extern void *kmem_alloc_io(size_t size, int align_mask, xfs_km_flags_t flags); > extern void *kmem_alloc_large(size_t size, xfs_km_flags_t); > > diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c > index 67de68584224..807950eca17a 100644 > --- a/fs/xfs/libxfs/xfs_attr_leaf.c > +++ b/fs/xfs/libxfs/xfs_attr_leaf.c > @@ -885,7 +885,7 @@ xfs_attr_shortform_to_leaf( > ifp = dp->i_afp; > sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data; > size = be16_to_cpu(sf->hdr.totsize); > - tmpbuffer = kmem_alloc(size, 0); > + tmpbuffer = kmalloc(size, GFP_KERNEL | __GFP_NOFAIL); > ASSERT(tmpbuffer != NULL); > memcpy(tmpbuffer, ifp->if_u1.if_data, size); > sf = (xfs_attr_shortform_t *)tmpbuffer; > @@ -1073,7 +1073,7 @@ xfs_attr3_leaf_to_shortform( > > trace_xfs_attr_leaf_to_sf(args); > > - tmpbuffer = kmem_alloc(args->geo->blksize, 0); > + tmpbuffer = kmalloc(args->geo->blksize, GFP_KERNEL | __GFP_NOFAIL); > if (!tmpbuffer) > return -ENOMEM; > > @@ -1534,7 +1534,7 @@ xfs_attr3_leaf_compact( > > trace_xfs_attr_leaf_compact(args); > > - tmpbuffer = kmem_alloc(args->geo->blksize, 0); > + tmpbuffer = kmalloc(args->geo->blksize, GFP_KERNEL | __GFP_NOFAIL); > memcpy(tmpbuffer, bp->b_addr, args->geo->blksize); > memset(bp->b_addr, 0, args->geo->blksize); > leaf_src = (xfs_attr_leafblock_t *)tmpbuffer; > diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c > index 37596e49b92e..fc5bed95bd44 100644 > --- a/fs/xfs/libxfs/xfs_bmap.c > +++ b/fs/xfs/libxfs/xfs_bmap.c > @@ -6045,7 +6045,7 @@ __xfs_bmap_add( > bmap->br_blockcount, > bmap->br_state); > > - bi = kmem_alloc(sizeof(struct xfs_bmap_intent), KM_NOFS); > + bi = kmalloc(sizeof(struct xfs_bmap_intent), GFP_NOFS | __GFP_NOFAIL); > INIT_LIST_HEAD(&bi->bi_list); > bi->bi_type = type; > bi->bi_owner = ip; > diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c > index 29c25d1b3b76..efe84c636bd3 100644 > --- a/fs/xfs/libxfs/xfs_da_btree.c > +++ b/fs/xfs/libxfs/xfs_da_btree.c > @@ -2152,7 +2152,9 @@ xfs_da_grow_inode_int( > * If we didn't get it and the block might work if fragmented, > * try without the CONTIG flag. Loop until we get it all. > */ > - mapp = kmem_alloc(sizeof(*mapp) * count, 0); > + mapp = kmalloc(sizeof(*mapp) * count, > + GFP_KERNEL | __GFP_NOFAIL); > + > for (b = *bno, mapi = 0; b < *bno + count; ) { > nmap = min(XFS_BMAP_MAX_NMAP, count); > c = (int)(*bno + count - b); > diff --git a/fs/xfs/libxfs/xfs_defer.c b/fs/xfs/libxfs/xfs_defer.c > index 27c3d150068a..7dd16f208b82 100644 > --- a/fs/xfs/libxfs/xfs_defer.c > +++ b/fs/xfs/libxfs/xfs_defer.c > @@ -516,8 +516,8 @@ xfs_defer_add( > dfp = NULL; > } > if (!dfp) { > - dfp = kmem_alloc(sizeof(struct xfs_defer_pending), > - KM_NOFS); > + dfp = kmalloc(sizeof(struct xfs_defer_pending), > + GFP_NOFS | __GFP_NOFAIL); > dfp->dfp_type = type; > dfp->dfp_intent = NULL; > dfp->dfp_done = NULL; > diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c > index c2deda036271..4777356b4f83 100644 > --- a/fs/xfs/libxfs/xfs_dir2.c > +++ b/fs/xfs/libxfs/xfs_dir2.c > @@ -331,7 +331,7 @@ xfs_dir_cilookup_result( > !(args->op_flags & XFS_DA_OP_CILOOKUP)) > return -EEXIST; > > - args->value = kmem_alloc(len, KM_NOFS | KM_MAYFAIL); > + args->value = kmalloc(len, GFP_NOFS | __GFP_RETRY_MAYFAIL); > if (!args->value) > return -ENOMEM; > > diff --git a/fs/xfs/libxfs/xfs_dir2_block.c b/fs/xfs/libxfs/xfs_dir2_block.c > index 766f282b706a..54ae07a432e4 100644 > --- a/fs/xfs/libxfs/xfs_dir2_block.c > +++ b/fs/xfs/libxfs/xfs_dir2_block.c > @@ -1083,7 +1083,7 @@ xfs_dir2_sf_to_block( > * Copy the directory into a temporary buffer. > * Then pitch the incore inode data so we can make extents. > */ > - sfp = kmem_alloc(ifp->if_bytes, 0); > + sfp = kmalloc(ifp->if_bytes, GFP_KERNEL | __GFP_NOFAIL); > memcpy(sfp, oldsfp, ifp->if_bytes); > > xfs_idata_realloc(dp, -ifp->if_bytes, XFS_DATA_FORK); > diff --git a/fs/xfs/libxfs/xfs_dir2_sf.c b/fs/xfs/libxfs/xfs_dir2_sf.c > index f4de4e7b10ef..43d72aebb9cf 100644 > --- a/fs/xfs/libxfs/xfs_dir2_sf.c > +++ b/fs/xfs/libxfs/xfs_dir2_sf.c > @@ -276,7 +276,7 @@ xfs_dir2_block_to_sf( > * format the data into. Once we have formatted the data, we can free > * the block and copy the formatted data into the inode literal area. > */ > - sfp = kmem_alloc(mp->m_sb.sb_inodesize, 0); > + sfp = kmalloc(mp->m_sb.sb_inodesize, GFP_KERNEL | __GFP_NOFAIL); > memcpy(sfp, sfhp, xfs_dir2_sf_hdr_size(sfhp->i8count)); > > /* > @@ -530,7 +530,7 @@ xfs_dir2_sf_addname_hard( > */ > sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; > old_isize = (int)dp->i_d.di_size; > - buf = kmem_alloc(old_isize, 0); > + buf = kmalloc(old_isize, GFP_KERNEL | __GFP_NOFAIL); > oldsfp = (xfs_dir2_sf_hdr_t *)buf; > memcpy(oldsfp, sfp, old_isize); > /* > @@ -1162,7 +1162,7 @@ xfs_dir2_sf_toino4( > * Don't want xfs_idata_realloc copying the data here. > */ > oldsize = dp->i_df.if_bytes; > - buf = kmem_alloc(oldsize, 0); > + buf = kmalloc(oldsize, GFP_KERNEL | __GFP_NOFAIL); > oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; > ASSERT(oldsfp->i8count == 1); > memcpy(buf, oldsfp, oldsize); > @@ -1235,7 +1235,7 @@ xfs_dir2_sf_toino8( > * Don't want xfs_idata_realloc copying the data here. > */ > oldsize = dp->i_df.if_bytes; > - buf = kmem_alloc(oldsize, 0); > + buf = kmalloc(oldsize, GFP_KERNEL | __GFP_NOFAIL); > oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; > ASSERT(oldsfp->i8count == 0); > memcpy(buf, oldsfp, oldsize); > diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c > index 82799dddf97d..62c305654657 100644 > --- a/fs/xfs/libxfs/xfs_inode_fork.c > +++ b/fs/xfs/libxfs/xfs_inode_fork.c > @@ -153,7 +153,8 @@ xfs_init_local_fork( > > if (size) { > real_size = roundup(mem_size, 4); > - ifp->if_u1.if_data = kmem_alloc(real_size, KM_NOFS); > + ifp->if_u1.if_data = kmalloc(real_size, > + GFP_NOFS | __GFP_NOFAIL); > memcpy(ifp->if_u1.if_data, data, size); > if (zero_terminate) > ifp->if_u1.if_data[size] = '\0'; > @@ -308,7 +309,7 @@ xfs_iformat_btree( > } > > ifp->if_broot_bytes = size; > - ifp->if_broot = kmem_alloc(size, KM_NOFS); > + ifp->if_broot = kmalloc(size, GFP_NOFS | __GFP_NOFAIL); > ASSERT(ifp->if_broot != NULL); > /* > * Copy and convert from the on-disk structure > @@ -373,7 +374,8 @@ xfs_iroot_realloc( > */ > if (ifp->if_broot_bytes == 0) { > new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, rec_diff); > - ifp->if_broot = kmem_alloc(new_size, KM_NOFS); > + ifp->if_broot = kmalloc(new_size, > + GFP_NOFS | __GFP_NOFAIL); > ifp->if_broot_bytes = (int)new_size; > return; > } > @@ -414,7 +416,7 @@ xfs_iroot_realloc( > else > new_size = 0; > if (new_size > 0) { > - new_broot = kmem_alloc(new_size, KM_NOFS); > + new_broot = kmalloc(new_size, GFP_NOFS | __GFP_NOFAIL); > /* > * First copy over the btree block header. > */ > diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c > index 07894c53e753..6a89443da50a 100644 > --- a/fs/xfs/libxfs/xfs_refcount.c > +++ b/fs/xfs/libxfs/xfs_refcount.c > @@ -1188,8 +1188,8 @@ __xfs_refcount_add( > type, XFS_FSB_TO_AGBNO(tp->t_mountp, startblock), > blockcount); > > - ri = kmem_alloc(sizeof(struct xfs_refcount_intent), > - KM_NOFS); > + ri = kmalloc(sizeof(struct xfs_refcount_intent), > + GFP_NOFS | __GFP_NOFAIL); > INIT_LIST_HEAD(&ri->ri_list); > ri->ri_type = type; > ri->ri_startblock = startblock; > @@ -1584,7 +1584,7 @@ struct xfs_refcount_recovery { > /* Stuff an extent on the recovery list. */ > STATIC int > xfs_refcount_recover_extent( > - struct xfs_btree_cur *cur, > + struct xfs_btree_cur *cur, > union xfs_btree_rec *rec, > void *priv) > { > @@ -1596,7 +1596,8 @@ xfs_refcount_recover_extent( > return -EFSCORRUPTED; > } > > - rr = kmem_alloc(sizeof(struct xfs_refcount_recovery), 0); > + rr = kmalloc(sizeof(struct xfs_refcount_recovery), > + GFP_KERNEL | __GFP_NOFAIL); > xfs_refcount_btrec_to_irec(rec, &rr->rr_rrec); > list_add_tail(&rr->rr_list, debris); > > diff --git a/fs/xfs/libxfs/xfs_rmap.c b/fs/xfs/libxfs/xfs_rmap.c > index 38e9414878b3..0e1e8cbb8862 100644 > --- a/fs/xfs/libxfs/xfs_rmap.c > +++ b/fs/xfs/libxfs/xfs_rmap.c > @@ -2286,7 +2286,7 @@ __xfs_rmap_add( > bmap->br_blockcount, > bmap->br_state); > > - ri = kmem_alloc(sizeof(struct xfs_rmap_intent), KM_NOFS); > + ri = kmalloc(sizeof(struct xfs_rmap_intent), GFP_NOFS | __GFP_NOFAIL); > INIT_LIST_HEAD(&ri->ri_list); > ri->ri_type = type; > ri->ri_owner = owner; > diff --git a/fs/xfs/scrub/bitmap.c b/fs/xfs/scrub/bitmap.c > index cabde1c4c235..5787d4f74e71 100644 > --- a/fs/xfs/scrub/bitmap.c > +++ b/fs/xfs/scrub/bitmap.c > @@ -25,7 +25,8 @@ xfs_bitmap_set( > { > struct xfs_bitmap_range *bmr; > > - bmr = kmem_alloc(sizeof(struct xfs_bitmap_range), KM_MAYFAIL); > + bmr = kmalloc(sizeof(struct xfs_bitmap_range), > + GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (!bmr) > return -ENOMEM; > > @@ -181,8 +182,8 @@ xfs_bitmap_disunion( > * Deleting from the middle: add the new right extent > * and then shrink the left extent. > */ > - new_br = kmem_alloc(sizeof(struct xfs_bitmap_range), > - KM_MAYFAIL); > + new_br = kmalloc(sizeof(struct xfs_bitmap_range), > + GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (!new_br) { > error = -ENOMEM; > goto out; > diff --git a/fs/xfs/scrub/btree.c b/fs/xfs/scrub/btree.c > index bed40b605076..857f813681ed 100644 > --- a/fs/xfs/scrub/btree.c > +++ b/fs/xfs/scrub/btree.c > @@ -429,8 +429,8 @@ xchk_btree_check_owner( > * later scanning. > */ > if (cur->bc_btnum == XFS_BTNUM_BNO || cur->bc_btnum == XFS_BTNUM_RMAP) { > - co = kmem_alloc(sizeof(struct check_owner), > - KM_MAYFAIL); > + co = kmalloc(sizeof(struct check_owner), > + GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (!co) > return -ENOMEM; > co->level = level; > diff --git a/fs/xfs/scrub/refcount.c b/fs/xfs/scrub/refcount.c > index 985724e81ebf..f5c2e320e416 100644 > --- a/fs/xfs/scrub/refcount.c > +++ b/fs/xfs/scrub/refcount.c > @@ -125,8 +125,8 @@ xchk_refcountbt_rmap_check( > * is healthy each rmap_irec we see will be in agbno order > * so we don't need insertion sort here. > */ > - frag = kmem_alloc(sizeof(struct xchk_refcnt_frag), > - KM_MAYFAIL); > + frag = kmalloc(sizeof(struct xchk_refcnt_frag), > + GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (!frag) > return -ENOMEM; > memcpy(&frag->rm, rec, sizeof(frag->rm)); > diff --git a/fs/xfs/xfs_attr_inactive.c b/fs/xfs/xfs_attr_inactive.c > index 8351b3b611ac..42d7d8cbdb6e 100644 > --- a/fs/xfs/xfs_attr_inactive.c > +++ b/fs/xfs/xfs_attr_inactive.c > @@ -148,7 +148,7 @@ xfs_attr3_leaf_inactive( > * Allocate storage for a list of all the "remote" value extents. > */ > size = count * sizeof(xfs_attr_inactive_list_t); > - list = kmem_alloc(size, 0); > + list = kmalloc(size, GFP_KERNEL | __GFP_NOFAIL); > > /* > * Identify each of the "remote" value extents. > diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c > index e1d1c4eb9e69..2a475ca6e353 100644 > --- a/fs/xfs/xfs_attr_list.c > +++ b/fs/xfs/xfs_attr_list.c > @@ -116,7 +116,7 @@ xfs_attr_shortform_list( > * It didn't all fit, so we have to sort everything on hashval. > */ > sbsize = sf->hdr.count * sizeof(*sbuf); > - sbp = sbuf = kmem_alloc(sbsize, KM_NOFS); > + sbp = sbuf = kmalloc(sbsize, GFP_NOFS | __GFP_NOFAIL); > > /* > * Scan the attribute list for the rest of the entries, storing > diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c > index c70122fbc2a8..7428fe6a322c 100644 > --- a/fs/xfs/xfs_buf.c > +++ b/fs/xfs/xfs_buf.c > @@ -274,8 +274,9 @@ _xfs_buf_get_pages( > if (page_count <= XB_PAGES) { > bp->b_pages = bp->b_page_array; > } else { > - bp->b_pages = kmem_alloc(sizeof(struct page *) * > - page_count, KM_NOFS); > + bp->b_pages = kmalloc(sizeof(struct page *) * > + page_count, > + GFP_NOFS | __GFP_NOFAIL); > if (bp->b_pages == NULL) > return -ENOMEM; > } > diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c > index 9778e4e69e07..38b634cef1ed 100644 > --- a/fs/xfs/xfs_filestream.c > +++ b/fs/xfs/xfs_filestream.c > @@ -247,7 +247,7 @@ xfs_filestream_pick_ag( > return 0; > > err = -ENOMEM; > - item = kmem_alloc(sizeof(*item), KM_MAYFAIL); > + item = kmalloc(sizeof(*item), GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (!item) > goto out_put_ag; > > diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c > index 297b2a73f285..1d1fe67ad237 100644 > --- a/fs/xfs/xfs_inode.c > +++ b/fs/xfs/xfs_inode.c > @@ -3493,7 +3493,7 @@ xfs_iflush_cluster( > pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); > > cilist_size = igeo->inodes_per_cluster * sizeof(struct xfs_inode *); > - cilist = kmem_alloc(cilist_size, KM_MAYFAIL|KM_NOFS); > + cilist = kmalloc(cilist_size, GFP_NOFS | __GFP_RETRY_MAYFAIL); > if (!cilist) > goto out_put; > > diff --git a/fs/xfs/xfs_iwalk.c b/fs/xfs/xfs_iwalk.c > index e6006423e140..aa6bc0555d21 100644 > --- a/fs/xfs/xfs_iwalk.c > +++ b/fs/xfs/xfs_iwalk.c > @@ -152,7 +152,7 @@ xfs_iwalk_alloc( > > /* Allocate a prefetch buffer for inobt records. */ > size = iwag->sz_recs * sizeof(struct xfs_inobt_rec_incore); > - iwag->recs = kmem_alloc(size, KM_MAYFAIL); > + iwag->recs = kmalloc(size, GFP_KERNEL | __GFP_RETRY_MAYFAIL); > if (iwag->recs == NULL) > return -ENOMEM; > > diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c > index 5423171e0b7d..7bb53fbf32f6 100644 > --- a/fs/xfs/xfs_log_recover.c > +++ b/fs/xfs/xfs_log_recover.c > @@ -1962,7 +1962,7 @@ xlog_recover_buffer_pass1( > } > } > > - bcp = kmem_alloc(sizeof(struct xfs_buf_cancel), 0); > + bcp = kmalloc(sizeof(struct xfs_buf_cancel), GFP_KERNEL | __GFP_NOFAIL); > bcp->bc_blkno = buf_f->blf_blkno; > bcp->bc_len = buf_f->blf_len; > bcp->bc_refcount = 1; > @@ -2932,7 +2932,8 @@ xlog_recover_inode_pass2( > if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) { > in_f = item->ri_buf[0].i_addr; > } else { > - in_f = kmem_alloc(sizeof(struct xfs_inode_log_format), 0); > + in_f = kmalloc(sizeof(struct xfs_inode_log_format), > + GFP_KERNEL | __GFP_NOFAIL); > need_free = 1; > error = xfs_inode_item_format_convert(&item->ri_buf[0], in_f); > if (error) > @@ -4271,7 +4272,7 @@ xlog_recover_add_to_trans( > return 0; > } > > - ptr = kmem_alloc(len, 0); > + ptr = kmalloc(len, GFP_KERNEL | __GFP_NOFAIL); > memcpy(ptr, dp, len); > in_f = (struct xfs_inode_log_format *)ptr; I noticed that kmalloc is generating warnings with generic/049 when 16k directories (-n size=16k) are enabled. I /think/ this is because it's quite possible to write out an xlog_op_header with a length of more than a single page; log recovery will then try to allocate a huge memory buffer to recover the transaction; and so we try to do a huge NOFAIL allocation, which makes the mm unhappy. The one thing I've noticed with this conversion series is that the flags translation isn't 100% 1-to-1. Before, kmem_flags_convert didn't explicitly set __GFP_NOFAIL anywhere; we simply took the default behavior. IIRC that means that small allocations actually /are/ guaranteed to succeed, but multipage allocations certainly aren't. This seems to be one place where we could have asked for a lot of memory, failed to get it, and crashed. Now that we explicitly set NOFAIL in all the places where we don't also check for a null return, I think we're just uncovering latent bugs lurking in the code base. The kernel does actually fulfill the allocation request, but it's clearly not happy. --D Relevant snippet of dmesg; everything else was normal: XFS (sdd): Mounting V5 Filesystem XFS (sdd): Starting recovery (logdev: internal) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 459342 at mm/page_alloc.c:3275 get_page_from_freelist+0x434/0x1660 Modules linked in: dm_thin_pool dm_persistent_data dm_bio_prison dm_snapshot dm_bufio dm_flakey xfs libcrc32c ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 ip_set_hash_ip ip_set_hash_net xt_tcpudp xt_set ip_set_hash_mac bfq ip_set nfnetlink ip6table_filter ip6_tables iptable_filter sch_fq_codel ip_tables x_tables nfsv4 af_packet [last unloaded: scsi_debug] CPU: 1 PID: 459342 Comm: mount Not tainted 5.4.0-rc3-djw #rc3 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:get_page_from_freelist+0x434/0x1660 Code: e6 00 00 00 00 48 89 84 24 a0 00 00 00 0f 84 08 fd ff ff f7 84 24 c0 00 00 00 00 80 00 00 74 0c 83 bc 24 84 00 00 00 01 76 02 <0f> 0b 49 8d 87 10 05 00 00 48 89 c7 48 89 84 24 88 00 00 00 e8 03 RSP: 0018:ffffc900035d3918 EFLAGS: 00010202 RAX: ffff88803fffb680 RBX: 0000000000002968 RCX: ffffea0000c8e108 RDX: ffff88803fffbba8 RSI: ffff88803fffb870 RDI: 0000000000000000 RBP: 0000000000000002 R08: 0000000000000201 R09: 000000000002ff81 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000048cc0 R14: 0000000000000001 R15: ffff88803fffb680 FS: 00007fcfdf89a080(0000) GS:ffff88803ea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b202ec48c8 CR3: 000000003bfdc005 CR4: 00000000001606a0 Call Trace: ? kvm_clock_read+0x14/0x30 __alloc_pages_nodemask+0x172/0x3a0 kmalloc_order+0x18/0x80 kmalloc_order_trace+0x1d/0x130 xlog_recover_add_to_trans+0x4b/0x340 [xfs] xlog_recovery_process_trans+0xe9/0xf0 [xfs] xlog_recover_process_data+0x9e/0x1f0 [xfs] xlog_do_recovery_pass+0x3a9/0x7c0 [xfs] xlog_do_log_recovery+0x72/0x150 [xfs] xlog_do_recover+0x43/0x2a0 [xfs] xlog_recover+0xdf/0x170 [xfs] xfs_log_mount+0x2e3/0x300 [xfs] xfs_mountfs+0x4e7/0x9f0 [xfs] xfs_fc_fill_super+0x2f8/0x520 [xfs] ? xfs_fs_destroy_inode+0x4f0/0x4f0 [xfs] get_tree_bdev+0x198/0x270 vfs_get_tree+0x23/0xb0 do_mount+0x87e/0xa20 ksys_mount+0xb6/0xd0 __x64_sys_mount+0x21/0x30 do_syscall_64+0x50/0x180 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fcfdf15d3ca Code: 48 8b 0d c1 8a 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8e 8a 2c 00 f7 d8 64 89 01 48 RSP: 002b:00007fff0af10a58 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000055b202ec1970 RCX: 00007fcfdf15d3ca RDX: 000055b202ec1be0 RSI: 000055b202ec1c20 RDI: 000055b202ec1c00 RBP: 0000000000000000 R08: 000055b202ec1b80 R09: 0000000000000000 R10: 00000000c0ed0000 R11: 0000000000000202 R12: 000055b202ec1c00 R13: 000055b202ec1be0 R14: 0000000000000000 R15: 00007fcfdf67e8a4 irq event stamp: 18398 hardirqs last enabled at (18397): [<ffffffff8123738f>] __slab_alloc.isra.83+0x6f/0x80 hardirqs last disabled at (18398): [<ffffffff81001d8a>] trace_hardirqs_off_thunk+0x1a/0x20 softirqs last enabled at (18158): [<ffffffff81a003af>] __do_softirq+0x3af/0x4a4 softirqs last disabled at (18149): [<ffffffff8106528c>] irq_exit+0xbc/0xe0 ---[ end trace 3669c914fa8ccac6 ]--- AFAICT this is because inode buffers are 32K on this system > > diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c > index a2664afa10c3..2993af4a9935 100644 > --- a/fs/xfs/xfs_qm.c > +++ b/fs/xfs/xfs_qm.c > @@ -988,7 +988,8 @@ xfs_qm_reset_dqcounts_buf( > if (qip->i_d.di_nblocks == 0) > return 0; > > - map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), 0); > + map = kmalloc(XFS_DQITER_MAP_SIZE * sizeof(*map), > + GFP_KERNEL | __GFP_NOFAIL); > > lblkno = 0; > maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); > diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c > index 7f03b4ab3452..dfd419d402ea 100644 > --- a/fs/xfs/xfs_rtalloc.c > +++ b/fs/xfs/xfs_rtalloc.c > @@ -962,7 +962,7 @@ xfs_growfs_rt( > /* > * Allocate a new (fake) mount/sb. > */ > - nmp = kmem_alloc(sizeof(*nmp), 0); > + nmp = kmalloc(sizeof(*nmp), GFP_KERNEL | __GFP_NOFAIL); > /* > * Loop over the bitmap blocks. > * We will do everything one bitmap block at a time. > diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c > index cc1933dc652f..eee831681e9c 100644 > --- a/fs/xfs/xfs_super.c > +++ b/fs/xfs/xfs_super.c > @@ -1739,7 +1739,7 @@ static int xfs_init_fs_context( > { > struct xfs_mount *mp; > > - mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO); > + mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL | __GFP_NOFAIL); > if (!mp) > return -ENOMEM; > > -- > 2.23.0 >
On Fri, Nov 22, 2019 at 07:57:56AM -0800, Darrick J. Wong wrote: > On Wed, Nov 20, 2019 at 11:44:25AM +0100, Carlos Maiolino wrote: > > Use kmalloc() directly. <snip all this> > > diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c > > index 5423171e0b7d..7bb53fbf32f6 100644 > > --- a/fs/xfs/xfs_log_recover.c > > +++ b/fs/xfs/xfs_log_recover.c > > @@ -1962,7 +1962,7 @@ xlog_recover_buffer_pass1( > > } > > } > > > > - bcp = kmem_alloc(sizeof(struct xfs_buf_cancel), 0); > > + bcp = kmalloc(sizeof(struct xfs_buf_cancel), GFP_KERNEL | __GFP_NOFAIL); > > bcp->bc_blkno = buf_f->blf_blkno; > > bcp->bc_len = buf_f->blf_len; > > bcp->bc_refcount = 1; > > @@ -2932,7 +2932,8 @@ xlog_recover_inode_pass2( > > if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) { > > in_f = item->ri_buf[0].i_addr; > > } else { > > - in_f = kmem_alloc(sizeof(struct xfs_inode_log_format), 0); > > + in_f = kmalloc(sizeof(struct xfs_inode_log_format), > > + GFP_KERNEL | __GFP_NOFAIL); > > need_free = 1; > > error = xfs_inode_item_format_convert(&item->ri_buf[0], in_f); > > if (error) > > @@ -4271,7 +4272,7 @@ xlog_recover_add_to_trans( > > return 0; > > } > > > > - ptr = kmem_alloc(len, 0); > > + ptr = kmalloc(len, GFP_KERNEL | __GFP_NOFAIL); > > memcpy(ptr, dp, len); > > in_f = (struct xfs_inode_log_format *)ptr; > > I noticed that kmalloc is generating warnings with generic/049 when 16k > directories (-n size=16k) are enabled. I /think/ this is because it's > quite possible to write out an xlog_op_header with a length of more than > a single page; log recovery will then try to allocate a huge memory > buffer to recover the transaction; and so we try to do a huge NOFAIL > allocation, which makes the mm unhappy. > > The one thing I've noticed with this conversion series is that the flags > translation isn't 100% 1-to-1. Before, kmem_flags_convert didn't > explicitly set __GFP_NOFAIL anywhere; we simply took the default > behavior. IIRC that means that small allocations actually /are/ > guaranteed to succeed, but multipage allocations certainly aren't. > This seems to be one place where we could have asked for a lot of > memory, failed to get it, and crashed. > > Now that we explicitly set NOFAIL in all the places where we don't also > check for a null return, I think we're just uncovering latent bugs > lurking in the code base. The kernel does actually fulfill the > allocation request, but it's clearly not happy. FWIW I ran with various dirsizes and options and it looks like this is the only place where we screw this up... patches soon. --D > --D > > Relevant snippet of dmesg; everything else was normal: > > XFS (sdd): Mounting V5 Filesystem > XFS (sdd): Starting recovery (logdev: internal) > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 459342 at mm/page_alloc.c:3275 get_page_from_freelist+0x434/0x1660 > Modules linked in: dm_thin_pool dm_persistent_data dm_bio_prison dm_snapshot dm_bufio dm_flakey xfs libcrc32c ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 ip_set_hash_ip ip_set_hash_net xt_tcpudp xt_set ip_set_hash_mac bfq ip_set nfnetlink ip6table_filter ip6_tables iptable_filter sch_fq_codel ip_tables x_tables nfsv4 af_packet [last unloaded: scsi_debug] > CPU: 1 PID: 459342 Comm: mount Not tainted 5.4.0-rc3-djw #rc3 > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.10.2-1ubuntu1 04/01/2014 > RIP: 0010:get_page_from_freelist+0x434/0x1660 > Code: e6 00 00 00 00 48 89 84 24 a0 00 00 00 0f 84 08 fd ff ff f7 84 24 c0 00 00 00 00 80 00 00 74 0c 83 bc 24 84 00 00 00 01 76 02 <0f> 0b 49 8d 87 10 05 00 00 48 89 c7 48 89 84 24 88 00 00 00 e8 03 > RSP: 0018:ffffc900035d3918 EFLAGS: 00010202 > RAX: ffff88803fffb680 RBX: 0000000000002968 RCX: ffffea0000c8e108 > RDX: ffff88803fffbba8 RSI: ffff88803fffb870 RDI: 0000000000000000 > RBP: 0000000000000002 R08: 0000000000000201 R09: 000000000002ff81 > R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 > R13: 0000000000048cc0 R14: 0000000000000001 R15: ffff88803fffb680 > FS: 00007fcfdf89a080(0000) GS:ffff88803ea00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 000055b202ec48c8 CR3: 000000003bfdc005 CR4: 00000000001606a0 > Call Trace: > ? kvm_clock_read+0x14/0x30 > __alloc_pages_nodemask+0x172/0x3a0 > kmalloc_order+0x18/0x80 > kmalloc_order_trace+0x1d/0x130 > xlog_recover_add_to_trans+0x4b/0x340 [xfs] > xlog_recovery_process_trans+0xe9/0xf0 [xfs] > xlog_recover_process_data+0x9e/0x1f0 [xfs] > xlog_do_recovery_pass+0x3a9/0x7c0 [xfs] > xlog_do_log_recovery+0x72/0x150 [xfs] > xlog_do_recover+0x43/0x2a0 [xfs] > xlog_recover+0xdf/0x170 [xfs] > xfs_log_mount+0x2e3/0x300 [xfs] > xfs_mountfs+0x4e7/0x9f0 [xfs] > xfs_fc_fill_super+0x2f8/0x520 [xfs] > ? xfs_fs_destroy_inode+0x4f0/0x4f0 [xfs] > get_tree_bdev+0x198/0x270 > vfs_get_tree+0x23/0xb0 > do_mount+0x87e/0xa20 > ksys_mount+0xb6/0xd0 > __x64_sys_mount+0x21/0x30 > do_syscall_64+0x50/0x180 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x7fcfdf15d3ca > Code: 48 8b 0d c1 8a 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8e 8a 2c 00 f7 d8 64 89 01 48 > RSP: 002b:00007fff0af10a58 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 > RAX: ffffffffffffffda RBX: 000055b202ec1970 RCX: 00007fcfdf15d3ca > RDX: 000055b202ec1be0 RSI: 000055b202ec1c20 RDI: 000055b202ec1c00 > RBP: 0000000000000000 R08: 000055b202ec1b80 R09: 0000000000000000 > R10: 00000000c0ed0000 R11: 0000000000000202 R12: 000055b202ec1c00 > R13: 000055b202ec1be0 R14: 0000000000000000 R15: 00007fcfdf67e8a4 > irq event stamp: 18398 > hardirqs last enabled at (18397): [<ffffffff8123738f>] __slab_alloc.isra.83+0x6f/0x80 > hardirqs last disabled at (18398): [<ffffffff81001d8a>] trace_hardirqs_off_thunk+0x1a/0x20 > softirqs last enabled at (18158): [<ffffffff81a003af>] __do_softirq+0x3af/0x4a4 > softirqs last disabled at (18149): [<ffffffff8106528c>] irq_exit+0xbc/0xe0 > ---[ end trace 3669c914fa8ccac6 ]--- > > AFAICT this is because inode buffers are 32K on this system > > > > > diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c > > index a2664afa10c3..2993af4a9935 100644 > > --- a/fs/xfs/xfs_qm.c > > +++ b/fs/xfs/xfs_qm.c > > @@ -988,7 +988,8 @@ xfs_qm_reset_dqcounts_buf( > > if (qip->i_d.di_nblocks == 0) > > return 0; > > > > - map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), 0); > > + map = kmalloc(XFS_DQITER_MAP_SIZE * sizeof(*map), > > + GFP_KERNEL | __GFP_NOFAIL); > > > > lblkno = 0; > > maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); > > diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c > > index 7f03b4ab3452..dfd419d402ea 100644 > > --- a/fs/xfs/xfs_rtalloc.c > > +++ b/fs/xfs/xfs_rtalloc.c > > @@ -962,7 +962,7 @@ xfs_growfs_rt( > > /* > > * Allocate a new (fake) mount/sb. > > */ > > - nmp = kmem_alloc(sizeof(*nmp), 0); > > + nmp = kmalloc(sizeof(*nmp), GFP_KERNEL | __GFP_NOFAIL); > > /* > > * Loop over the bitmap blocks. > > * We will do everything one bitmap block at a time. > > diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c > > index cc1933dc652f..eee831681e9c 100644 > > --- a/fs/xfs/xfs_super.c > > +++ b/fs/xfs/xfs_super.c > > @@ -1739,7 +1739,7 @@ static int xfs_init_fs_context( > > { > > struct xfs_mount *mp; > > > > - mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO); > > + mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL | __GFP_NOFAIL); > > if (!mp) > > return -ENOMEM; > > > > -- > > 2.23.0 > >
On Fri, Nov 22, 2019 at 02:30:48PM -0800, Darrick J. Wong wrote: > On Fri, Nov 22, 2019 at 07:57:56AM -0800, Darrick J. Wong wrote: > > On Wed, Nov 20, 2019 at 11:44:25AM +0100, Carlos Maiolino wrote: > > > Use kmalloc() directly. > > <snip all this> > > > > diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c > > > index 5423171e0b7d..7bb53fbf32f6 100644 > > > --- a/fs/xfs/xfs_log_recover.c > > > +++ b/fs/xfs/xfs_log_recover.c > > > @@ -1962,7 +1962,7 @@ xlog_recover_buffer_pass1( > > > } > > > } > > > > > > - bcp = kmem_alloc(sizeof(struct xfs_buf_cancel), 0); > > > + bcp = kmalloc(sizeof(struct xfs_buf_cancel), GFP_KERNEL | __GFP_NOFAIL); > > > bcp->bc_blkno = buf_f->blf_blkno; > > > bcp->bc_len = buf_f->blf_len; > > > bcp->bc_refcount = 1; > > > @@ -2932,7 +2932,8 @@ xlog_recover_inode_pass2( > > > if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) { > > > in_f = item->ri_buf[0].i_addr; > > > } else { > > > - in_f = kmem_alloc(sizeof(struct xfs_inode_log_format), 0); > > > + in_f = kmalloc(sizeof(struct xfs_inode_log_format), > > > + GFP_KERNEL | __GFP_NOFAIL); > > > need_free = 1; > > > error = xfs_inode_item_format_convert(&item->ri_buf[0], in_f); > > > if (error) > > > @@ -4271,7 +4272,7 @@ xlog_recover_add_to_trans( > > > return 0; > > > } > > > > > > - ptr = kmem_alloc(len, 0); > > > + ptr = kmalloc(len, GFP_KERNEL | __GFP_NOFAIL); > > > memcpy(ptr, dp, len); > > > in_f = (struct xfs_inode_log_format *)ptr; > > > > I noticed that kmalloc is generating warnings with generic/049 when 16k > > directories (-n size=16k) are enabled. I /think/ this is because it's > > quite possible to write out an xlog_op_header with a length of more than > > a single page; log recovery will then try to allocate a huge memory > > buffer to recover the transaction; and so we try to do a huge NOFAIL > > allocation, which makes the mm unhappy. > > > > The one thing I've noticed with this conversion series is that the flags > > translation isn't 100% 1-to-1. Before, kmem_flags_convert didn't > > explicitly set __GFP_NOFAIL anywhere; we simply took the default > > behavior. IIRC that means that small allocations actually /are/ > > guaranteed to succeed, but multipage allocations certainly aren't. > > This seems to be one place where we could have asked for a lot of > > memory, failed to get it, and crashed. > > > > Now that we explicitly set NOFAIL in all the places where we don't also > > check for a null return, I think we're just uncovering latent bugs > > lurking in the code base. The kernel does actually fulfill the > > allocation request, but it's clearly not happy. > > FWIW I ran with various dirsizes and options and it looks like this is > the only place where we screw this up... patches soon. I rescind that statement -- there's enough places in this series where I can't 100% tell that a k{mzre}alloc call asks for a small enough amount of memory to qualify for __GFP_NOFAIL. I really want this cleanup to start with a straightforward removal of the kmem.c wrappers without any behavior changes. Only after that's done should we move on to things like adding __GFP_NOFAIL to allocations or deciding if/where we can substitute kfree for kvfree. Munging them together means I can't easily tell if something is seriously broken here (but the WARN_ONs suggest this) and I'd forgotten that the merge window is opening the week of a major US holiday, so I choose to defer this series to 5.6. --D > --D > > > --D > > > > Relevant snippet of dmesg; everything else was normal: > > > > XFS (sdd): Mounting V5 Filesystem > > XFS (sdd): Starting recovery (logdev: internal) > > ------------[ cut here ]------------ > > WARNING: CPU: 1 PID: 459342 at mm/page_alloc.c:3275 get_page_from_freelist+0x434/0x1660 > > Modules linked in: dm_thin_pool dm_persistent_data dm_bio_prison dm_snapshot dm_bufio dm_flakey xfs libcrc32c ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 ip_set_hash_ip ip_set_hash_net xt_tcpudp xt_set ip_set_hash_mac bfq ip_set nfnetlink ip6table_filter ip6_tables iptable_filter sch_fq_codel ip_tables x_tables nfsv4 af_packet [last unloaded: scsi_debug] > > CPU: 1 PID: 459342 Comm: mount Not tainted 5.4.0-rc3-djw #rc3 > > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.10.2-1ubuntu1 04/01/2014 > > RIP: 0010:get_page_from_freelist+0x434/0x1660 > > Code: e6 00 00 00 00 48 89 84 24 a0 00 00 00 0f 84 08 fd ff ff f7 84 24 c0 00 00 00 00 80 00 00 74 0c 83 bc 24 84 00 00 00 01 76 02 <0f> 0b 49 8d 87 10 05 00 00 48 89 c7 48 89 84 24 88 00 00 00 e8 03 > > RSP: 0018:ffffc900035d3918 EFLAGS: 00010202 > > RAX: ffff88803fffb680 RBX: 0000000000002968 RCX: ffffea0000c8e108 > > RDX: ffff88803fffbba8 RSI: ffff88803fffb870 RDI: 0000000000000000 > > RBP: 0000000000000002 R08: 0000000000000201 R09: 000000000002ff81 > > R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 > > R13: 0000000000048cc0 R14: 0000000000000001 R15: ffff88803fffb680 > > FS: 00007fcfdf89a080(0000) GS:ffff88803ea00000(0000) knlGS:0000000000000000 > > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > CR2: 000055b202ec48c8 CR3: 000000003bfdc005 CR4: 00000000001606a0 > > Call Trace: > > ? kvm_clock_read+0x14/0x30 > > __alloc_pages_nodemask+0x172/0x3a0 > > kmalloc_order+0x18/0x80 > > kmalloc_order_trace+0x1d/0x130 > > xlog_recover_add_to_trans+0x4b/0x340 [xfs] > > xlog_recovery_process_trans+0xe9/0xf0 [xfs] > > xlog_recover_process_data+0x9e/0x1f0 [xfs] > > xlog_do_recovery_pass+0x3a9/0x7c0 [xfs] > > xlog_do_log_recovery+0x72/0x150 [xfs] > > xlog_do_recover+0x43/0x2a0 [xfs] > > xlog_recover+0xdf/0x170 [xfs] > > xfs_log_mount+0x2e3/0x300 [xfs] > > xfs_mountfs+0x4e7/0x9f0 [xfs] > > xfs_fc_fill_super+0x2f8/0x520 [xfs] > > ? xfs_fs_destroy_inode+0x4f0/0x4f0 [xfs] > > get_tree_bdev+0x198/0x270 > > vfs_get_tree+0x23/0xb0 > > do_mount+0x87e/0xa20 > > ksys_mount+0xb6/0xd0 > > __x64_sys_mount+0x21/0x30 > > do_syscall_64+0x50/0x180 > > entry_SYSCALL_64_after_hwframe+0x49/0xbe > > RIP: 0033:0x7fcfdf15d3ca > > Code: 48 8b 0d c1 8a 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8e 8a 2c 00 f7 d8 64 89 01 48 > > RSP: 002b:00007fff0af10a58 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 > > RAX: ffffffffffffffda RBX: 000055b202ec1970 RCX: 00007fcfdf15d3ca > > RDX: 000055b202ec1be0 RSI: 000055b202ec1c20 RDI: 000055b202ec1c00 > > RBP: 0000000000000000 R08: 000055b202ec1b80 R09: 0000000000000000 > > R10: 00000000c0ed0000 R11: 0000000000000202 R12: 000055b202ec1c00 > > R13: 000055b202ec1be0 R14: 0000000000000000 R15: 00007fcfdf67e8a4 > > irq event stamp: 18398 > > hardirqs last enabled at (18397): [<ffffffff8123738f>] __slab_alloc.isra.83+0x6f/0x80 > > hardirqs last disabled at (18398): [<ffffffff81001d8a>] trace_hardirqs_off_thunk+0x1a/0x20 > > softirqs last enabled at (18158): [<ffffffff81a003af>] __do_softirq+0x3af/0x4a4 > > softirqs last disabled at (18149): [<ffffffff8106528c>] irq_exit+0xbc/0xe0 > > ---[ end trace 3669c914fa8ccac6 ]--- > > > > AFAICT this is because inode buffers are 32K on this system > > > > > > > > diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c > > > index a2664afa10c3..2993af4a9935 100644 > > > --- a/fs/xfs/xfs_qm.c > > > +++ b/fs/xfs/xfs_qm.c > > > @@ -988,7 +988,8 @@ xfs_qm_reset_dqcounts_buf( > > > if (qip->i_d.di_nblocks == 0) > > > return 0; > > > > > > - map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), 0); > > > + map = kmalloc(XFS_DQITER_MAP_SIZE * sizeof(*map), > > > + GFP_KERNEL | __GFP_NOFAIL); > > > > > > lblkno = 0; > > > maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); > > > diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c > > > index 7f03b4ab3452..dfd419d402ea 100644 > > > --- a/fs/xfs/xfs_rtalloc.c > > > +++ b/fs/xfs/xfs_rtalloc.c > > > @@ -962,7 +962,7 @@ xfs_growfs_rt( > > > /* > > > * Allocate a new (fake) mount/sb. > > > */ > > > - nmp = kmem_alloc(sizeof(*nmp), 0); > > > + nmp = kmalloc(sizeof(*nmp), GFP_KERNEL | __GFP_NOFAIL); > > > /* > > > * Loop over the bitmap blocks. > > > * We will do everything one bitmap block at a time. > > > diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c > > > index cc1933dc652f..eee831681e9c 100644 > > > --- a/fs/xfs/xfs_super.c > > > +++ b/fs/xfs/xfs_super.c > > > @@ -1739,7 +1739,7 @@ static int xfs_init_fs_context( > > > { > > > struct xfs_mount *mp; > > > > > > - mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO); > > > + mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL | __GFP_NOFAIL); > > > if (!mp) > > > return -ENOMEM; > > > > > > -- > > > 2.23.0 > > >
On Sun, Nov 24, 2019 at 02:02:56PM -0800, Darrick J. Wong wrote: > On Fri, Nov 22, 2019 at 02:30:48PM -0800, Darrick J. Wong wrote: > > On Fri, Nov 22, 2019 at 07:57:56AM -0800, Darrick J. Wong wrote: > > > On Wed, Nov 20, 2019 at 11:44:25AM +0100, Carlos Maiolino wrote: > > > > Use kmalloc() directly. > > > > <snip all this> > > > > > > diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c > > > > index 5423171e0b7d..7bb53fbf32f6 100644 > > > > --- a/fs/xfs/xfs_log_recover.c > > > > +++ b/fs/xfs/xfs_log_recover.c > > > > @@ -1962,7 +1962,7 @@ xlog_recover_buffer_pass1( > > > > } > > > > } > > > > > > > > - bcp = kmem_alloc(sizeof(struct xfs_buf_cancel), 0); > > > > + bcp = kmalloc(sizeof(struct xfs_buf_cancel), GFP_KERNEL | __GFP_NOFAIL); > > > > bcp->bc_blkno = buf_f->blf_blkno; > > > > bcp->bc_len = buf_f->blf_len; > > > > bcp->bc_refcount = 1; > > > > @@ -2932,7 +2932,8 @@ xlog_recover_inode_pass2( > > > > if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) { > > > > in_f = item->ri_buf[0].i_addr; > > > > } else { > > > > - in_f = kmem_alloc(sizeof(struct xfs_inode_log_format), 0); > > > > + in_f = kmalloc(sizeof(struct xfs_inode_log_format), > > > > + GFP_KERNEL | __GFP_NOFAIL); > > > > need_free = 1; > > > > error = xfs_inode_item_format_convert(&item->ri_buf[0], in_f); > > > > if (error) > > > > @@ -4271,7 +4272,7 @@ xlog_recover_add_to_trans( > > > > return 0; > > > > } > > > > > > > > - ptr = kmem_alloc(len, 0); > > > > + ptr = kmalloc(len, GFP_KERNEL | __GFP_NOFAIL); > > > > memcpy(ptr, dp, len); > > > > in_f = (struct xfs_inode_log_format *)ptr; > > > > > > I noticed that kmalloc is generating warnings with generic/049 when 16k > > > directories (-n size=16k) are enabled. I /think/ this is because it's > > > quite possible to write out an xlog_op_header with a length of more than > > > a single page; log recovery will then try to allocate a huge memory > > > buffer to recover the transaction; and so we try to do a huge NOFAIL > > > allocation, which makes the mm unhappy. > > > > > > The one thing I've noticed with this conversion series is that the flags > > > translation isn't 100% 1-to-1. Before, kmem_flags_convert didn't > > > explicitly set __GFP_NOFAIL anywhere; we simply took the default > > > behavior. IIRC that means that small allocations actually /are/ > > > guaranteed to succeed, but multipage allocations certainly aren't. > > > This seems to be one place where we could have asked for a lot of > > > memory, failed to get it, and crashed. > > > > > > Now that we explicitly set NOFAIL in all the places where we don't also > > > check for a null return, I think we're just uncovering latent bugs > > > lurking in the code base. The kernel does actually fulfill the > > > allocation request, but it's clearly not happy. > > > > FWIW I ran with various dirsizes and options and it looks like this is > > the only place where we screw this up... patches soon. > > I rescind that statement -- there's enough places in this series where I > can't 100% tell that a k{mzre}alloc call asks for a small enough amount > of memory to qualify for __GFP_NOFAIL. > > I really want this cleanup to start with a straightforward removal of > the kmem.c wrappers without any behavior changes. Only after that's > done should we move on to things like adding __GFP_NOFAIL to allocations > or deciding if/where we can substitute kfree for kvfree. > > Munging them together means I can't easily tell if something is > seriously broken here (but the WARN_ONs suggest this) and I'd forgotten > that the merge window is opening the week of a major US holiday, so I > choose to defer this series to 5.6. Thanks, this is the best option IMO too. I'll think a bit about it and check what should we do about it. > > --D > > > --D > > > > > --D > > > > > > Relevant snippet of dmesg; everything else was normal: > > > > > > XFS (sdd): Mounting V5 Filesystem > > > XFS (sdd): Starting recovery (logdev: internal) > > > ------------[ cut here ]------------ > > > WARNING: CPU: 1 PID: 459342 at mm/page_alloc.c:3275 get_page_from_freelist+0x434/0x1660 > > > Modules linked in: dm_thin_pool dm_persistent_data dm_bio_prison dm_snapshot dm_bufio dm_flakey xfs libcrc32c ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 ip_set_hash_ip ip_set_hash_net xt_tcpudp xt_set ip_set_hash_mac bfq ip_set nfnetlink ip6table_filter ip6_tables iptable_filter sch_fq_codel ip_tables x_tables nfsv4 af_packet [last unloaded: scsi_debug] > > > CPU: 1 PID: 459342 Comm: mount Not tainted 5.4.0-rc3-djw #rc3 > > > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.10.2-1ubuntu1 04/01/2014 > > > RIP: 0010:get_page_from_freelist+0x434/0x1660 > > > Code: e6 00 00 00 00 48 89 84 24 a0 00 00 00 0f 84 08 fd ff ff f7 84 24 c0 00 00 00 00 80 00 00 74 0c 83 bc 24 84 00 00 00 01 76 02 <0f> 0b 49 8d 87 10 05 00 00 48 89 c7 48 89 84 24 88 00 00 00 e8 03 > > > RSP: 0018:ffffc900035d3918 EFLAGS: 00010202 > > > RAX: ffff88803fffb680 RBX: 0000000000002968 RCX: ffffea0000c8e108 > > > RDX: ffff88803fffbba8 RSI: ffff88803fffb870 RDI: 0000000000000000 > > > RBP: 0000000000000002 R08: 0000000000000201 R09: 000000000002ff81 > > > R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 > > > R13: 0000000000048cc0 R14: 0000000000000001 R15: ffff88803fffb680 > > > FS: 00007fcfdf89a080(0000) GS:ffff88803ea00000(0000) knlGS:0000000000000000 > > > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > > CR2: 000055b202ec48c8 CR3: 000000003bfdc005 CR4: 00000000001606a0 > > > Call Trace: > > > ? kvm_clock_read+0x14/0x30 > > > __alloc_pages_nodemask+0x172/0x3a0 > > > kmalloc_order+0x18/0x80 > > > kmalloc_order_trace+0x1d/0x130 > > > xlog_recover_add_to_trans+0x4b/0x340 [xfs] > > > xlog_recovery_process_trans+0xe9/0xf0 [xfs] > > > xlog_recover_process_data+0x9e/0x1f0 [xfs] > > > xlog_do_recovery_pass+0x3a9/0x7c0 [xfs] > > > xlog_do_log_recovery+0x72/0x150 [xfs] > > > xlog_do_recover+0x43/0x2a0 [xfs] > > > xlog_recover+0xdf/0x170 [xfs] > > > xfs_log_mount+0x2e3/0x300 [xfs] > > > xfs_mountfs+0x4e7/0x9f0 [xfs] > > > xfs_fc_fill_super+0x2f8/0x520 [xfs] > > > ? xfs_fs_destroy_inode+0x4f0/0x4f0 [xfs] > > > get_tree_bdev+0x198/0x270 > > > vfs_get_tree+0x23/0xb0 > > > do_mount+0x87e/0xa20 > > > ksys_mount+0xb6/0xd0 > > > __x64_sys_mount+0x21/0x30 > > > do_syscall_64+0x50/0x180 > > > entry_SYSCALL_64_after_hwframe+0x49/0xbe > > > RIP: 0033:0x7fcfdf15d3ca > > > Code: 48 8b 0d c1 8a 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8e 8a 2c 00 f7 d8 64 89 01 48 > > > RSP: 002b:00007fff0af10a58 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 > > > RAX: ffffffffffffffda RBX: 000055b202ec1970 RCX: 00007fcfdf15d3ca > > > RDX: 000055b202ec1be0 RSI: 000055b202ec1c20 RDI: 000055b202ec1c00 > > > RBP: 0000000000000000 R08: 000055b202ec1b80 R09: 0000000000000000 > > > R10: 00000000c0ed0000 R11: 0000000000000202 R12: 000055b202ec1c00 > > > R13: 000055b202ec1be0 R14: 0000000000000000 R15: 00007fcfdf67e8a4 > > > irq event stamp: 18398 > > > hardirqs last enabled at (18397): [<ffffffff8123738f>] __slab_alloc.isra.83+0x6f/0x80 > > > hardirqs last disabled at (18398): [<ffffffff81001d8a>] trace_hardirqs_off_thunk+0x1a/0x20 > > > softirqs last enabled at (18158): [<ffffffff81a003af>] __do_softirq+0x3af/0x4a4 > > > softirqs last disabled at (18149): [<ffffffff8106528c>] irq_exit+0xbc/0xe0 > > > ---[ end trace 3669c914fa8ccac6 ]--- > > > > > > AFAICT this is because inode buffers are 32K on this system > > > > > > > > > > > diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c > > > > index a2664afa10c3..2993af4a9935 100644 > > > > --- a/fs/xfs/xfs_qm.c > > > > +++ b/fs/xfs/xfs_qm.c > > > > @@ -988,7 +988,8 @@ xfs_qm_reset_dqcounts_buf( > > > > if (qip->i_d.di_nblocks == 0) > > > > return 0; > > > > > > > > - map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), 0); > > > > + map = kmalloc(XFS_DQITER_MAP_SIZE * sizeof(*map), > > > > + GFP_KERNEL | __GFP_NOFAIL); > > > > > > > > lblkno = 0; > > > > maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); > > > > diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c > > > > index 7f03b4ab3452..dfd419d402ea 100644 > > > > --- a/fs/xfs/xfs_rtalloc.c > > > > +++ b/fs/xfs/xfs_rtalloc.c > > > > @@ -962,7 +962,7 @@ xfs_growfs_rt( > > > > /* > > > > * Allocate a new (fake) mount/sb. > > > > */ > > > > - nmp = kmem_alloc(sizeof(*nmp), 0); > > > > + nmp = kmalloc(sizeof(*nmp), GFP_KERNEL | __GFP_NOFAIL); > > > > /* > > > > * Loop over the bitmap blocks. > > > > * We will do everything one bitmap block at a time. > > > > diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c > > > > index cc1933dc652f..eee831681e9c 100644 > > > > --- a/fs/xfs/xfs_super.c > > > > +++ b/fs/xfs/xfs_super.c > > > > @@ -1739,7 +1739,7 @@ static int xfs_init_fs_context( > > > > { > > > > struct xfs_mount *mp; > > > > > > > > - mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO); > > > > + mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL | __GFP_NOFAIL); > > > > if (!mp) > > > > return -ENOMEM; > > > > > > > > -- > > > > 2.23.0 > > > > >
diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c index 6e10e565632c..79467813d810 100644 --- a/fs/xfs/kmem.c +++ b/fs/xfs/kmem.c @@ -8,8 +8,8 @@ #include "xfs_message.h" #include "xfs_trace.h" -void * -kmem_alloc(size_t size, xfs_km_flags_t flags) +static void * +__kmem_alloc(size_t size, xfs_km_flags_t flags) { int retries = 0; gfp_t lflags = kmem_flags_convert(flags); @@ -72,7 +72,7 @@ kmem_alloc_io(size_t size, int align_mask, xfs_km_flags_t flags) if (WARN_ON_ONCE(align_mask >= PAGE_SIZE)) align_mask = PAGE_SIZE - 1; - ptr = kmem_alloc(size, flags | KM_MAYFAIL); + ptr = __kmem_alloc(size, flags | KM_MAYFAIL); if (ptr) { if (!((uintptr_t)ptr & align_mask)) return ptr; @@ -88,7 +88,7 @@ kmem_alloc_large(size_t size, xfs_km_flags_t flags) trace_kmem_alloc_large(size, flags, _RET_IP_); - ptr = kmem_alloc(size, flags | KM_MAYFAIL); + ptr = __kmem_alloc(size, flags | KM_MAYFAIL); if (ptr) return ptr; return __kmem_vmalloc(size, flags); diff --git a/fs/xfs/kmem.h b/fs/xfs/kmem.h index a18c27c99721..78a54839430a 100644 --- a/fs/xfs/kmem.h +++ b/fs/xfs/kmem.h @@ -52,7 +52,6 @@ kmem_flags_convert(xfs_km_flags_t flags) return lflags; } -extern void *kmem_alloc(size_t, xfs_km_flags_t); extern void *kmem_alloc_io(size_t size, int align_mask, xfs_km_flags_t flags); extern void *kmem_alloc_large(size_t size, xfs_km_flags_t); diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c index 67de68584224..807950eca17a 100644 --- a/fs/xfs/libxfs/xfs_attr_leaf.c +++ b/fs/xfs/libxfs/xfs_attr_leaf.c @@ -885,7 +885,7 @@ xfs_attr_shortform_to_leaf( ifp = dp->i_afp; sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data; size = be16_to_cpu(sf->hdr.totsize); - tmpbuffer = kmem_alloc(size, 0); + tmpbuffer = kmalloc(size, GFP_KERNEL | __GFP_NOFAIL); ASSERT(tmpbuffer != NULL); memcpy(tmpbuffer, ifp->if_u1.if_data, size); sf = (xfs_attr_shortform_t *)tmpbuffer; @@ -1073,7 +1073,7 @@ xfs_attr3_leaf_to_shortform( trace_xfs_attr_leaf_to_sf(args); - tmpbuffer = kmem_alloc(args->geo->blksize, 0); + tmpbuffer = kmalloc(args->geo->blksize, GFP_KERNEL | __GFP_NOFAIL); if (!tmpbuffer) return -ENOMEM; @@ -1534,7 +1534,7 @@ xfs_attr3_leaf_compact( trace_xfs_attr_leaf_compact(args); - tmpbuffer = kmem_alloc(args->geo->blksize, 0); + tmpbuffer = kmalloc(args->geo->blksize, GFP_KERNEL | __GFP_NOFAIL); memcpy(tmpbuffer, bp->b_addr, args->geo->blksize); memset(bp->b_addr, 0, args->geo->blksize); leaf_src = (xfs_attr_leafblock_t *)tmpbuffer; diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index 37596e49b92e..fc5bed95bd44 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -6045,7 +6045,7 @@ __xfs_bmap_add( bmap->br_blockcount, bmap->br_state); - bi = kmem_alloc(sizeof(struct xfs_bmap_intent), KM_NOFS); + bi = kmalloc(sizeof(struct xfs_bmap_intent), GFP_NOFS | __GFP_NOFAIL); INIT_LIST_HEAD(&bi->bi_list); bi->bi_type = type; bi->bi_owner = ip; diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c index 29c25d1b3b76..efe84c636bd3 100644 --- a/fs/xfs/libxfs/xfs_da_btree.c +++ b/fs/xfs/libxfs/xfs_da_btree.c @@ -2152,7 +2152,9 @@ xfs_da_grow_inode_int( * If we didn't get it and the block might work if fragmented, * try without the CONTIG flag. Loop until we get it all. */ - mapp = kmem_alloc(sizeof(*mapp) * count, 0); + mapp = kmalloc(sizeof(*mapp) * count, + GFP_KERNEL | __GFP_NOFAIL); + for (b = *bno, mapi = 0; b < *bno + count; ) { nmap = min(XFS_BMAP_MAX_NMAP, count); c = (int)(*bno + count - b); diff --git a/fs/xfs/libxfs/xfs_defer.c b/fs/xfs/libxfs/xfs_defer.c index 27c3d150068a..7dd16f208b82 100644 --- a/fs/xfs/libxfs/xfs_defer.c +++ b/fs/xfs/libxfs/xfs_defer.c @@ -516,8 +516,8 @@ xfs_defer_add( dfp = NULL; } if (!dfp) { - dfp = kmem_alloc(sizeof(struct xfs_defer_pending), - KM_NOFS); + dfp = kmalloc(sizeof(struct xfs_defer_pending), + GFP_NOFS | __GFP_NOFAIL); dfp->dfp_type = type; dfp->dfp_intent = NULL; dfp->dfp_done = NULL; diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c index c2deda036271..4777356b4f83 100644 --- a/fs/xfs/libxfs/xfs_dir2.c +++ b/fs/xfs/libxfs/xfs_dir2.c @@ -331,7 +331,7 @@ xfs_dir_cilookup_result( !(args->op_flags & XFS_DA_OP_CILOOKUP)) return -EEXIST; - args->value = kmem_alloc(len, KM_NOFS | KM_MAYFAIL); + args->value = kmalloc(len, GFP_NOFS | __GFP_RETRY_MAYFAIL); if (!args->value) return -ENOMEM; diff --git a/fs/xfs/libxfs/xfs_dir2_block.c b/fs/xfs/libxfs/xfs_dir2_block.c index 766f282b706a..54ae07a432e4 100644 --- a/fs/xfs/libxfs/xfs_dir2_block.c +++ b/fs/xfs/libxfs/xfs_dir2_block.c @@ -1083,7 +1083,7 @@ xfs_dir2_sf_to_block( * Copy the directory into a temporary buffer. * Then pitch the incore inode data so we can make extents. */ - sfp = kmem_alloc(ifp->if_bytes, 0); + sfp = kmalloc(ifp->if_bytes, GFP_KERNEL | __GFP_NOFAIL); memcpy(sfp, oldsfp, ifp->if_bytes); xfs_idata_realloc(dp, -ifp->if_bytes, XFS_DATA_FORK); diff --git a/fs/xfs/libxfs/xfs_dir2_sf.c b/fs/xfs/libxfs/xfs_dir2_sf.c index f4de4e7b10ef..43d72aebb9cf 100644 --- a/fs/xfs/libxfs/xfs_dir2_sf.c +++ b/fs/xfs/libxfs/xfs_dir2_sf.c @@ -276,7 +276,7 @@ xfs_dir2_block_to_sf( * format the data into. Once we have formatted the data, we can free * the block and copy the formatted data into the inode literal area. */ - sfp = kmem_alloc(mp->m_sb.sb_inodesize, 0); + sfp = kmalloc(mp->m_sb.sb_inodesize, GFP_KERNEL | __GFP_NOFAIL); memcpy(sfp, sfhp, xfs_dir2_sf_hdr_size(sfhp->i8count)); /* @@ -530,7 +530,7 @@ xfs_dir2_sf_addname_hard( */ sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; old_isize = (int)dp->i_d.di_size; - buf = kmem_alloc(old_isize, 0); + buf = kmalloc(old_isize, GFP_KERNEL | __GFP_NOFAIL); oldsfp = (xfs_dir2_sf_hdr_t *)buf; memcpy(oldsfp, sfp, old_isize); /* @@ -1162,7 +1162,7 @@ xfs_dir2_sf_toino4( * Don't want xfs_idata_realloc copying the data here. */ oldsize = dp->i_df.if_bytes; - buf = kmem_alloc(oldsize, 0); + buf = kmalloc(oldsize, GFP_KERNEL | __GFP_NOFAIL); oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; ASSERT(oldsfp->i8count == 1); memcpy(buf, oldsfp, oldsize); @@ -1235,7 +1235,7 @@ xfs_dir2_sf_toino8( * Don't want xfs_idata_realloc copying the data here. */ oldsize = dp->i_df.if_bytes; - buf = kmem_alloc(oldsize, 0); + buf = kmalloc(oldsize, GFP_KERNEL | __GFP_NOFAIL); oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; ASSERT(oldsfp->i8count == 0); memcpy(buf, oldsfp, oldsize); diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c index 82799dddf97d..62c305654657 100644 --- a/fs/xfs/libxfs/xfs_inode_fork.c +++ b/fs/xfs/libxfs/xfs_inode_fork.c @@ -153,7 +153,8 @@ xfs_init_local_fork( if (size) { real_size = roundup(mem_size, 4); - ifp->if_u1.if_data = kmem_alloc(real_size, KM_NOFS); + ifp->if_u1.if_data = kmalloc(real_size, + GFP_NOFS | __GFP_NOFAIL); memcpy(ifp->if_u1.if_data, data, size); if (zero_terminate) ifp->if_u1.if_data[size] = '\0'; @@ -308,7 +309,7 @@ xfs_iformat_btree( } ifp->if_broot_bytes = size; - ifp->if_broot = kmem_alloc(size, KM_NOFS); + ifp->if_broot = kmalloc(size, GFP_NOFS | __GFP_NOFAIL); ASSERT(ifp->if_broot != NULL); /* * Copy and convert from the on-disk structure @@ -373,7 +374,8 @@ xfs_iroot_realloc( */ if (ifp->if_broot_bytes == 0) { new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, rec_diff); - ifp->if_broot = kmem_alloc(new_size, KM_NOFS); + ifp->if_broot = kmalloc(new_size, + GFP_NOFS | __GFP_NOFAIL); ifp->if_broot_bytes = (int)new_size; return; } @@ -414,7 +416,7 @@ xfs_iroot_realloc( else new_size = 0; if (new_size > 0) { - new_broot = kmem_alloc(new_size, KM_NOFS); + new_broot = kmalloc(new_size, GFP_NOFS | __GFP_NOFAIL); /* * First copy over the btree block header. */ diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c index 07894c53e753..6a89443da50a 100644 --- a/fs/xfs/libxfs/xfs_refcount.c +++ b/fs/xfs/libxfs/xfs_refcount.c @@ -1188,8 +1188,8 @@ __xfs_refcount_add( type, XFS_FSB_TO_AGBNO(tp->t_mountp, startblock), blockcount); - ri = kmem_alloc(sizeof(struct xfs_refcount_intent), - KM_NOFS); + ri = kmalloc(sizeof(struct xfs_refcount_intent), + GFP_NOFS | __GFP_NOFAIL); INIT_LIST_HEAD(&ri->ri_list); ri->ri_type = type; ri->ri_startblock = startblock; @@ -1584,7 +1584,7 @@ struct xfs_refcount_recovery { /* Stuff an extent on the recovery list. */ STATIC int xfs_refcount_recover_extent( - struct xfs_btree_cur *cur, + struct xfs_btree_cur *cur, union xfs_btree_rec *rec, void *priv) { @@ -1596,7 +1596,8 @@ xfs_refcount_recover_extent( return -EFSCORRUPTED; } - rr = kmem_alloc(sizeof(struct xfs_refcount_recovery), 0); + rr = kmalloc(sizeof(struct xfs_refcount_recovery), + GFP_KERNEL | __GFP_NOFAIL); xfs_refcount_btrec_to_irec(rec, &rr->rr_rrec); list_add_tail(&rr->rr_list, debris); diff --git a/fs/xfs/libxfs/xfs_rmap.c b/fs/xfs/libxfs/xfs_rmap.c index 38e9414878b3..0e1e8cbb8862 100644 --- a/fs/xfs/libxfs/xfs_rmap.c +++ b/fs/xfs/libxfs/xfs_rmap.c @@ -2286,7 +2286,7 @@ __xfs_rmap_add( bmap->br_blockcount, bmap->br_state); - ri = kmem_alloc(sizeof(struct xfs_rmap_intent), KM_NOFS); + ri = kmalloc(sizeof(struct xfs_rmap_intent), GFP_NOFS | __GFP_NOFAIL); INIT_LIST_HEAD(&ri->ri_list); ri->ri_type = type; ri->ri_owner = owner; diff --git a/fs/xfs/scrub/bitmap.c b/fs/xfs/scrub/bitmap.c index cabde1c4c235..5787d4f74e71 100644 --- a/fs/xfs/scrub/bitmap.c +++ b/fs/xfs/scrub/bitmap.c @@ -25,7 +25,8 @@ xfs_bitmap_set( { struct xfs_bitmap_range *bmr; - bmr = kmem_alloc(sizeof(struct xfs_bitmap_range), KM_MAYFAIL); + bmr = kmalloc(sizeof(struct xfs_bitmap_range), + GFP_KERNEL | __GFP_RETRY_MAYFAIL); if (!bmr) return -ENOMEM; @@ -181,8 +182,8 @@ xfs_bitmap_disunion( * Deleting from the middle: add the new right extent * and then shrink the left extent. */ - new_br = kmem_alloc(sizeof(struct xfs_bitmap_range), - KM_MAYFAIL); + new_br = kmalloc(sizeof(struct xfs_bitmap_range), + GFP_KERNEL | __GFP_RETRY_MAYFAIL); if (!new_br) { error = -ENOMEM; goto out; diff --git a/fs/xfs/scrub/btree.c b/fs/xfs/scrub/btree.c index bed40b605076..857f813681ed 100644 --- a/fs/xfs/scrub/btree.c +++ b/fs/xfs/scrub/btree.c @@ -429,8 +429,8 @@ xchk_btree_check_owner( * later scanning. */ if (cur->bc_btnum == XFS_BTNUM_BNO || cur->bc_btnum == XFS_BTNUM_RMAP) { - co = kmem_alloc(sizeof(struct check_owner), - KM_MAYFAIL); + co = kmalloc(sizeof(struct check_owner), + GFP_KERNEL | __GFP_RETRY_MAYFAIL); if (!co) return -ENOMEM; co->level = level; diff --git a/fs/xfs/scrub/refcount.c b/fs/xfs/scrub/refcount.c index 985724e81ebf..f5c2e320e416 100644 --- a/fs/xfs/scrub/refcount.c +++ b/fs/xfs/scrub/refcount.c @@ -125,8 +125,8 @@ xchk_refcountbt_rmap_check( * is healthy each rmap_irec we see will be in agbno order * so we don't need insertion sort here. */ - frag = kmem_alloc(sizeof(struct xchk_refcnt_frag), - KM_MAYFAIL); + frag = kmalloc(sizeof(struct xchk_refcnt_frag), + GFP_KERNEL | __GFP_RETRY_MAYFAIL); if (!frag) return -ENOMEM; memcpy(&frag->rm, rec, sizeof(frag->rm)); diff --git a/fs/xfs/xfs_attr_inactive.c b/fs/xfs/xfs_attr_inactive.c index 8351b3b611ac..42d7d8cbdb6e 100644 --- a/fs/xfs/xfs_attr_inactive.c +++ b/fs/xfs/xfs_attr_inactive.c @@ -148,7 +148,7 @@ xfs_attr3_leaf_inactive( * Allocate storage for a list of all the "remote" value extents. */ size = count * sizeof(xfs_attr_inactive_list_t); - list = kmem_alloc(size, 0); + list = kmalloc(size, GFP_KERNEL | __GFP_NOFAIL); /* * Identify each of the "remote" value extents. diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c index e1d1c4eb9e69..2a475ca6e353 100644 --- a/fs/xfs/xfs_attr_list.c +++ b/fs/xfs/xfs_attr_list.c @@ -116,7 +116,7 @@ xfs_attr_shortform_list( * It didn't all fit, so we have to sort everything on hashval. */ sbsize = sf->hdr.count * sizeof(*sbuf); - sbp = sbuf = kmem_alloc(sbsize, KM_NOFS); + sbp = sbuf = kmalloc(sbsize, GFP_NOFS | __GFP_NOFAIL); /* * Scan the attribute list for the rest of the entries, storing diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index c70122fbc2a8..7428fe6a322c 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -274,8 +274,9 @@ _xfs_buf_get_pages( if (page_count <= XB_PAGES) { bp->b_pages = bp->b_page_array; } else { - bp->b_pages = kmem_alloc(sizeof(struct page *) * - page_count, KM_NOFS); + bp->b_pages = kmalloc(sizeof(struct page *) * + page_count, + GFP_NOFS | __GFP_NOFAIL); if (bp->b_pages == NULL) return -ENOMEM; } diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index 9778e4e69e07..38b634cef1ed 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -247,7 +247,7 @@ xfs_filestream_pick_ag( return 0; err = -ENOMEM; - item = kmem_alloc(sizeof(*item), KM_MAYFAIL); + item = kmalloc(sizeof(*item), GFP_KERNEL | __GFP_RETRY_MAYFAIL); if (!item) goto out_put_ag; diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 297b2a73f285..1d1fe67ad237 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -3493,7 +3493,7 @@ xfs_iflush_cluster( pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); cilist_size = igeo->inodes_per_cluster * sizeof(struct xfs_inode *); - cilist = kmem_alloc(cilist_size, KM_MAYFAIL|KM_NOFS); + cilist = kmalloc(cilist_size, GFP_NOFS | __GFP_RETRY_MAYFAIL); if (!cilist) goto out_put; diff --git a/fs/xfs/xfs_iwalk.c b/fs/xfs/xfs_iwalk.c index e6006423e140..aa6bc0555d21 100644 --- a/fs/xfs/xfs_iwalk.c +++ b/fs/xfs/xfs_iwalk.c @@ -152,7 +152,7 @@ xfs_iwalk_alloc( /* Allocate a prefetch buffer for inobt records. */ size = iwag->sz_recs * sizeof(struct xfs_inobt_rec_incore); - iwag->recs = kmem_alloc(size, KM_MAYFAIL); + iwag->recs = kmalloc(size, GFP_KERNEL | __GFP_RETRY_MAYFAIL); if (iwag->recs == NULL) return -ENOMEM; diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 5423171e0b7d..7bb53fbf32f6 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1962,7 +1962,7 @@ xlog_recover_buffer_pass1( } } - bcp = kmem_alloc(sizeof(struct xfs_buf_cancel), 0); + bcp = kmalloc(sizeof(struct xfs_buf_cancel), GFP_KERNEL | __GFP_NOFAIL); bcp->bc_blkno = buf_f->blf_blkno; bcp->bc_len = buf_f->blf_len; bcp->bc_refcount = 1; @@ -2932,7 +2932,8 @@ xlog_recover_inode_pass2( if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) { in_f = item->ri_buf[0].i_addr; } else { - in_f = kmem_alloc(sizeof(struct xfs_inode_log_format), 0); + in_f = kmalloc(sizeof(struct xfs_inode_log_format), + GFP_KERNEL | __GFP_NOFAIL); need_free = 1; error = xfs_inode_item_format_convert(&item->ri_buf[0], in_f); if (error) @@ -4271,7 +4272,7 @@ xlog_recover_add_to_trans( return 0; } - ptr = kmem_alloc(len, 0); + ptr = kmalloc(len, GFP_KERNEL | __GFP_NOFAIL); memcpy(ptr, dp, len); in_f = (struct xfs_inode_log_format *)ptr; diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index a2664afa10c3..2993af4a9935 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -988,7 +988,8 @@ xfs_qm_reset_dqcounts_buf( if (qip->i_d.di_nblocks == 0) return 0; - map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), 0); + map = kmalloc(XFS_DQITER_MAP_SIZE * sizeof(*map), + GFP_KERNEL | __GFP_NOFAIL); lblkno = 0; maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index 7f03b4ab3452..dfd419d402ea 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -962,7 +962,7 @@ xfs_growfs_rt( /* * Allocate a new (fake) mount/sb. */ - nmp = kmem_alloc(sizeof(*nmp), 0); + nmp = kmalloc(sizeof(*nmp), GFP_KERNEL | __GFP_NOFAIL); /* * Loop over the bitmap blocks. * We will do everything one bitmap block at a time. diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index cc1933dc652f..eee831681e9c 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1739,7 +1739,7 @@ static int xfs_init_fs_context( { struct xfs_mount *mp; - mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO); + mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL | __GFP_NOFAIL); if (!mp) return -ENOMEM;
Use kmalloc() directly. There is no logic change on kmem_alloc() since it's being removed soon, but for now, kmem_alloc_io() and kmem_alloc_large() still have use for kmem_alloc() due their fallback to vmalloc() and also the alignment check, so we can't completely remove it here. But, there is no need to export kmem_alloc() to the whole XFS driver anymore, so, convert kmem_alloc() into a static, local function __kmem_alloc(). Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com> --- V2: - Rephrase commit log fs/xfs/kmem.c | 8 ++++---- fs/xfs/kmem.h | 1 - fs/xfs/libxfs/xfs_attr_leaf.c | 6 +++--- fs/xfs/libxfs/xfs_bmap.c | 2 +- fs/xfs/libxfs/xfs_da_btree.c | 4 +++- fs/xfs/libxfs/xfs_defer.c | 4 ++-- fs/xfs/libxfs/xfs_dir2.c | 2 +- fs/xfs/libxfs/xfs_dir2_block.c | 2 +- fs/xfs/libxfs/xfs_dir2_sf.c | 8 ++++---- fs/xfs/libxfs/xfs_inode_fork.c | 10 ++++++---- fs/xfs/libxfs/xfs_refcount.c | 9 +++++---- fs/xfs/libxfs/xfs_rmap.c | 2 +- fs/xfs/scrub/bitmap.c | 7 ++++--- fs/xfs/scrub/btree.c | 4 ++-- fs/xfs/scrub/refcount.c | 4 ++-- fs/xfs/xfs_attr_inactive.c | 2 +- fs/xfs/xfs_attr_list.c | 2 +- fs/xfs/xfs_buf.c | 5 +++-- fs/xfs/xfs_filestream.c | 2 +- fs/xfs/xfs_inode.c | 2 +- fs/xfs/xfs_iwalk.c | 2 +- fs/xfs/xfs_log_recover.c | 7 ++++--- fs/xfs/xfs_qm.c | 3 ++- fs/xfs/xfs_rtalloc.c | 2 +- fs/xfs/xfs_super.c | 2 +- 25 files changed, 55 insertions(+), 47 deletions(-)