Re: [PATCH v4 9/9] xfs: support STATX_DIOALIGN
From: "Darrick J. Wong" <djwong@kernel.org>
Date: 2022-07-22 16:24:44
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linux-block, linux-ext4, linux-f2fs-devel, linux-fscrypt, linux-fsdevel, linux-xfs, lkml
On Fri, Jul 22, 2022 at 12:12:28AM -0700, Eric Biggers wrote:
From: Eric Biggers <redacted> Add support for STATX_DIOALIGN to xfs, so that direct I/O alignment restrictions are exposed to userspace in a generic way. Signed-off-by: Eric Biggers <redacted>
LGTM Reviewed-by: Darrick J. Wong <djwong@kernel.org> --D
quoted hunk ↗ jump to hunk
--- fs/xfs/xfs_iops.c | 9 +++++++++ 1 file changed, 9 insertions(+)diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 29f5b8b8aca69a..bac3f56141801e 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c@@ -605,6 +605,15 @@ xfs_vn_getattr( stat->blksize = BLKDEV_IOSIZE; stat->rdev = inode->i_rdev; break; + case S_IFREG: + if (request_mask & STATX_DIOALIGN) { + struct xfs_buftarg *target = xfs_inode_buftarg(ip); + + stat->result_mask |= STATX_DIOALIGN; + stat->dio_mem_align = target->bt_logical_sectorsize; + stat->dio_offset_align = target->bt_logical_sectorsize; + } + fallthrough; default: stat->blksize = xfs_stat_blksize(ip); stat->rdev = 0;-- 2.37.0