| Message ID | 20170106141107.23953-8-mhocko@kernel.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
On Fri, Jan 06, 2017 at 03:11:06PM +0100, Michal Hocko wrote: > From: Michal Hocko <mhocko@suse.com> > > This reverts commit c45653c341f5c8a0ce19c8f0ad4678640849cb86 because > sb_getblk_gfp is not really needed as > sb_getblk > __getblk_gfp > __getblk_slow > grow_buffers > grow_dev_page > gfp_mask = mapping_gfp_constraint(inode->i_mapping, ~__GFP_FS) | gfp > > so __GFP_FS is cleared unconditionally and therefore the above commit > didn't have any real effect in fact. > > This patch should not introduce any functional change. The main point > of this change is to reduce explicit GFP_NOFS usage inside ext4 code to > make the review of the remaining usage easier. > > Signed-off-by: Michal Hocko <mhocko@suse.com> > Reviewed-by: Jan Kara <jack@suse.cz> If I'm not mistaken, this patch is not dependent on any of the other patches in this series (and the other patches are not dependent on this one). Hence, I could take this patch via the ext4 tree, correct? - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon 16-01-17 22:01:18, Theodore Ts'o wrote: > On Fri, Jan 06, 2017 at 03:11:06PM +0100, Michal Hocko wrote: > > From: Michal Hocko <mhocko@suse.com> > > > > This reverts commit c45653c341f5c8a0ce19c8f0ad4678640849cb86 because > > sb_getblk_gfp is not really needed as > > sb_getblk > > __getblk_gfp > > __getblk_slow > > grow_buffers > > grow_dev_page > > gfp_mask = mapping_gfp_constraint(inode->i_mapping, ~__GFP_FS) | gfp > > > > so __GFP_FS is cleared unconditionally and therefore the above commit > > didn't have any real effect in fact. > > > > This patch should not introduce any functional change. The main point > > of this change is to reduce explicit GFP_NOFS usage inside ext4 code to > > make the review of the remaining usage easier. > > > > Signed-off-by: Michal Hocko <mhocko@suse.com> > > Reviewed-by: Jan Kara <jack@suse.cz> > > If I'm not mistaken, this patch is not dependent on any of the other > patches in this series (and the other patches are not dependent on > this one). Hence, I could take this patch via the ext4 tree, correct? Yes, that is correct
On Tue 17-01-17 08:54:50, Michal Hocko wrote: > On Mon 16-01-17 22:01:18, Theodore Ts'o wrote: > > On Fri, Jan 06, 2017 at 03:11:06PM +0100, Michal Hocko wrote: > > > From: Michal Hocko <mhocko@suse.com> > > > > > > This reverts commit c45653c341f5c8a0ce19c8f0ad4678640849cb86 because > > > sb_getblk_gfp is not really needed as > > > sb_getblk > > > __getblk_gfp > > > __getblk_slow > > > grow_buffers > > > grow_dev_page > > > gfp_mask = mapping_gfp_constraint(inode->i_mapping, ~__GFP_FS) | gfp > > > > > > so __GFP_FS is cleared unconditionally and therefore the above commit > > > didn't have any real effect in fact. > > > > > > This patch should not introduce any functional change. The main point > > > of this change is to reduce explicit GFP_NOFS usage inside ext4 code to > > > make the review of the remaining usage easier. > > > > > > Signed-off-by: Michal Hocko <mhocko@suse.com> > > > Reviewed-by: Jan Kara <jack@suse.cz> > > > > If I'm not mistaken, this patch is not dependent on any of the other > > patches in this series (and the other patches are not dependent on > > this one). Hence, I could take this patch via the ext4 tree, correct? > > Yes, that is correct Hi Ted, this doesn't seem to be in any of the branches [1]. I plan to resend the whole scope nofs series, should I add this to the pile or you are going to route it via your tree? [1] git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 3e295d3350a9..9867b9e5ad8f 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -518,7 +518,7 @@ __read_extent_tree_block(const char *function, unsigned int line, struct buffer_head *bh; int err; - bh = sb_getblk_gfp(inode->i_sb, pblk, __GFP_MOVABLE | GFP_NOFS); + bh = sb_getblk(inode->i_sb, pblk); if (unlikely(!bh)) return ERR_PTR(-ENOMEM); @@ -1096,7 +1096,7 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode, err = -EFSCORRUPTED; goto cleanup; } - bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS); + bh = sb_getblk(inode->i_sb, newblock); if (unlikely(!bh)) { err = -ENOMEM; goto cleanup; @@ -1290,7 +1290,7 @@ static int ext4_ext_grow_indepth(handle_t *handle, struct inode *inode, if (newblock == 0) return err; - bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS); + bh = sb_getblk(inode->i_sb, newblock); if (unlikely(!bh)) return -ENOMEM; lock_buffer(bh);