diff options
| author | Eric Biggers <ebiggers@google.com> | 2022-08-26 23:58:51 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2022-09-11 19:47:12 -0500 |
| commit | 61a223df421f698c253143014cfd384255b3cf1e (patch) | |
| tree | ebc56d9da8a6c2a4ae91e11f405ce755021d30ad /fs/xfs/xfs_iops.c | |
| parent | c8c02272a9f74bcba4a930a496b2a0c661873c35 (diff) | |
xfs: support STATX_DIOALIGN
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 <ebiggers@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/r/20220827065851.135710-9-ebiggers@kernel.org
Diffstat (limited to 'fs/xfs/xfs_iops.c')
| -rw-r--r-- | fs/xfs/xfs_iops.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 45518b8c613c..f51c60d7e205 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -604,6 +604,16 @@ 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); + struct block_device *bdev = target->bt_bdev; + + stat->result_mask |= STATX_DIOALIGN; + stat->dio_mem_align = bdev_dma_alignment(bdev) + 1; + stat->dio_offset_align = bdev_logical_block_size(bdev); + } + fallthrough; default: stat->blksize = xfs_stat_blksize(ip); stat->rdev = 0; |