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Expand the sub-fs block size zeroing to now cover RT extents, by calling setting iomap->io_block_size as xfs_inode_alloc_unitsize(). In xfs_iomap_write_unwritten(), update the unwritten range fsb to cover this extent granularity. In xfs_file_dio_write(), handle a write which is not aligned to extent size granularity as unaligned. Since the extent size granularity need not be a power-of-2, handle this also. Signed-off-by: John Garry --- fs/xfs/xfs_file.c | 24 +++++++++++++++++++----- fs/xfs/xfs_inode.c | 17 +++++++++++------ fs/xfs/xfs_inode.h | 1 + fs/xfs/xfs_iomap.c | 8 +++++++- 4 files changed, 38 insertions(+), 12 deletions(-) diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index b240ea5241dc..24fe3c2e03da 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -601,7 +601,7 @@ xfs_file_dio_write_aligned( } /* - * Handle block unaligned direct I/O writes + * Handle unaligned direct IO writes. * * In most cases direct I/O writes will be done holding IOLOCK_SHARED, allowing * them to be done in parallel with reads and other direct I/O writes. However, @@ -630,9 +630,9 @@ xfs_file_dio_write_unaligned( ssize_t ret; /* - * Extending writes need exclusivity because of the sub-block zeroing - * that the DIO code always does for partial tail blocks beyond EOF, so - * don't even bother trying the fast path in this case. + * Extending writes need exclusivity because of the sub-block/extent + * zeroing that the DIO code always does for partial tail blocks + * beyond EOF, so don't even bother trying the fast path in this case. */ if (iocb->ki_pos > isize || iocb->ki_pos + count >= isize) { if (iocb->ki_flags & IOCB_NOWAIT) @@ -698,11 +698,25 @@ xfs_file_dio_write( struct xfs_inode *ip = XFS_I(file_inode(iocb->ki_filp)); struct xfs_buftarg *target = xfs_inode_buftarg(ip); size_t count = iov_iter_count(from); + bool unaligned; + u64 unitsize; /* direct I/O must be aligned to device logical sector size */ if ((iocb->ki_pos | count) & target->bt_logical_sectormask) return -EINVAL; - if ((iocb->ki_pos | count) & ip->i_mount->m_blockmask) + + unitsize = xfs_inode_alloc_unitsize(ip); + if (!is_power_of_2(unitsize)) { + if (isaligned_64(iocb->ki_pos, unitsize) && + isaligned_64(count, unitsize)) + unaligned = false; + else + unaligned = true; + } else { + unaligned = (iocb->ki_pos | count) & (unitsize - 1); + } + + if (unaligned) return xfs_file_dio_write_unaligned(ip, iocb, from); return xfs_file_dio_write_aligned(ip, iocb, from); } diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 58fb7a5062e1..93ad442f399b 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -4264,15 +4264,20 @@ xfs_break_layouts( return error; } -/* Returns the size of fundamental allocation unit for a file, in bytes. */ unsigned int -xfs_inode_alloc_unitsize( +xfs_inode_alloc_unitsize_fsb( struct xfs_inode *ip) { - unsigned int blocks = 1; - if (XFS_IS_REALTIME_INODE(ip)) - blocks = ip->i_mount->m_sb.sb_rextsize; + return ip->i_mount->m_sb.sb_rextsize; + + return 1; +} - return XFS_FSB_TO_B(ip->i_mount, blocks); +/* Returns the size of fundamental allocation unit for a file, in bytes. */ +unsigned int +xfs_inode_alloc_unitsize( + struct xfs_inode *ip) +{ + return XFS_FSB_TO_B(ip->i_mount, xfs_inode_alloc_unitsize_fsb(ip)); } diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 292b90b5f2ac..90d2fa837117 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -643,6 +643,7 @@ int xfs_inode_reload_unlinked(struct xfs_inode *ip); bool xfs_ifork_zapped(const struct xfs_inode *ip, int whichfork); void xfs_inode_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, xfs_filblks_t *dblocks, xfs_filblks_t *rblocks); +unsigned int xfs_inode_alloc_unitsize_fsb(struct xfs_inode *ip); unsigned int xfs_inode_alloc_unitsize(struct xfs_inode *ip); struct xfs_dir_update_params { diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index ecb4cae88248..fbe69f747e30 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -127,7 +127,7 @@ xfs_bmbt_to_iomap( } iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff); iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount); - iomap->io_block_size = i_blocksize(VFS_I(ip)); + iomap->io_block_size = xfs_inode_alloc_unitsize(ip); if (mapping_flags & IOMAP_DAX) iomap->dax_dev = target->bt_daxdev; else @@ -577,11 +577,17 @@ xfs_iomap_write_unwritten( xfs_fsize_t i_size; uint resblks; int error; + unsigned int rounding; trace_xfs_unwritten_convert(ip, offset, count); offset_fsb = XFS_B_TO_FSBT(mp, offset); count_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count); + rounding = xfs_inode_alloc_unitsize_fsb(ip); + if (rounding > 1) { + offset_fsb = rounddown_64(offset_fsb, rounding); + count_fsb = roundup_64(count_fsb, rounding); + } count_fsb = (xfs_filblks_t)(count_fsb - offset_fsb); /*