Re: [Patch v9 04/10] fs: Add initial atomic write support info to statx

From: Hannes Reinecke
Date: Fri Jun 21 2024 - 01:57:46 EST


On 6/20/24 14:53, John Garry wrote:
From: Prasad Singamsetty <prasad.singamsetty@xxxxxxxxxx>

Extend statx system call to return additional info for atomic write support
support for a file.

Helper function generic_fill_statx_atomic_writes() can be used by FSes to
fill in the relevant statx fields. For now atomic_write_segments_max will
always be 1, otherwise some rules would need to be imposed on iovec length
and alignment, which we don't want now.

Signed-off-by: Prasad Singamsetty <prasad.singamsetty@xxxxxxxxxx>
jpg: relocate bdev support to another patch
Reviewed-by: "Darrick J. Wong" <djwong@xxxxxxxxxx>
Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: John Garry <john.g.garry@xxxxxxxxxx>
---
fs/stat.c | 34 ++++++++++++++++++++++++++++++++++
include/linux/fs.h | 3 +++
include/linux/stat.h | 3 +++
include/uapi/linux/stat.h | 12 ++++++++++--
4 files changed, 50 insertions(+), 2 deletions(-)

Reviewed-by: Hannes Reinecke <hare@xxxxxxx>

Cheers,

Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
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