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fs: move the bdex_statx call to vfs_getattr_nosec

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Currently bdex_statx is only called from the very high-level
vfs_statx_path function, and thus bypassing it for in-kernel calls
to vfs_getattr or vfs_getattr_nosec.

This breaks querying the block ѕize of the underlying device in the
loop driver and also is a pitfall for any other new kernel caller.

Move the call into the lowest level helper to ensure all callers get
the right results.

Fixes: 2d985f8c6b ("vfs: support STATX_DIOALIGN on block devices")
Fixes: f4774e92aa ("loop: take the file system minimum dio alignment into account")
Reported-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/20250417064042.712140-1-hch@lst.de
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christoph Hellwig
2025-04-17 10:14:34 +02:00
committed by Christian Brauner
parent 58db1c3cd0
commit 777d0961ff
3 changed files with 22 additions and 19 deletions
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block/bdev.c
+1 -2
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@@ -1272,8 +1272,7 @@ void sync_bdevs(bool wait)
/*
* Handle STATX_{DIOALIGN, WRITE_ATOMIC} for block devices.
*/
void bdev_statx(struct path *path, struct kstat *stat,
u32 request_mask)
void bdev_statx(const struct path *path, struct kstat *stat, u32 request_mask)
{
struct inode *backing_inode;
struct block_device *bdev;