[PATCH RFC 03/16] xfs: Support atomic write for statx
From: John Garry <john.g.garry@oracle.com>
Date: 2023-05-03 18:45:29
Also in:
linux-block, linux-fsdevel, linux-nvme, linux-scsi, linux-xfs, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest, xfs filesystem · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds, Carlos Maiolino
Support providing info on atomic write unit min and max. Darrick Wong originally authored this change. Signed-off-by: John Garry <john.g.garry@oracle.com> --- fs/xfs/xfs_iops.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 24718adb3c16..e542077704aa 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c@@ -614,6 +614,16 @@ xfs_vn_getattr( stat->dio_mem_align = bdev_dma_alignment(bdev) + 1; stat->dio_offset_align = bdev_logical_block_size(bdev); } + if (request_mask & STATX_WRITE_ATOMIC) { + struct xfs_buftarg *target = xfs_inode_buftarg(ip); + struct block_device *bdev = target->bt_bdev; + + stat->atomic_write_unit_min = queue_atomic_write_unit_min(bdev->bd_queue); + stat->atomic_write_unit_max = queue_atomic_write_unit_max(bdev->bd_queue); + stat->attributes |= STATX_ATTR_WRITE_ATOMIC; + stat->attributes_mask |= STATX_ATTR_WRITE_ATOMIC; + stat->result_mask |= STATX_WRITE_ATOMIC; + } fallthrough; default: stat->blksize = xfs_stat_blksize(ip);
--
2.31.1