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block: Add atomic write support for statx

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Extend statx system call to return additional info for atomic write support
support if the specified file is a block device.

Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Prasad Singamsetty <prasad.singamsetty@oracle.com>
Signed-off-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20240620125359.2684798-7-john.g.garry@oracle.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Prasad Singamsetty
2024-06-20 12:53:55 +00:00
committed by Jens Axboe
parent 9da3d1e912
commit 9abcfbd235
3 changed files with 39 additions and 19 deletions
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include/linux/blkdev.h
+4 -2
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@@ -1638,7 +1638,8 @@ int sync_blockdev(struct block_device *bdev);
int sync_blockdev_range(struct block_device *bdev, loff_t lstart, loff_t lend);
int sync_blockdev_nowait(struct block_device *bdev);
void sync_bdevs(bool wait);
void bdev_statx_dioalign(struct inode *inode, struct kstat *stat);
void bdev_statx(struct inode *backing_inode, struct kstat *stat,
u32 request_mask);
void printk_all_partitions(void);
int __init early_lookup_bdev(const char *pathname, dev_t *dev);
#else
@@ -1656,7 +1657,8 @@ static inline int sync_blockdev_nowait(struct block_device *bdev)
static inline void sync_bdevs(bool wait)
{
}
static inline void bdev_statx_dioalign(struct inode *inode, struct kstat *stat)
static inline void bdev_statx(struct inode *backing_inode, struct kstat *stat,
u32 request_mask)
{
}
static inline void printk_all_partitions(void)