Yichong Chen d5e81a5650 kernfs: avoid iattr allocation in listxattr ...

kernfs_iop_listxattr() only needs to report existing xattrs, but it uses
kernfs_iattrs(), which allocates kernfs_iattrs when the node does not
have one yet.

This makes a query operation create persistent per-node metadata even
when the xattr list is empty.

Use kernfs_iattrs_noalloc() instead and return an empty list when no
iattrs exist.

Signed-off-by: Yichong Chen <chenyichong@uniontech.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://patch.msgid.link/20260731120554.630147-1-chenyichong@uniontech.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

2026-08-15 23:09:10 +02:00

..

dir.c

kernfs: simplify kernfs_name_hash()

2026-07-18 16:07:22 +02:00

file.c

kernfs: fix xattr race condition with multiple superblocks

2026-06-06 15:21:40 +02:00

inode.c

kernfs: avoid iattr allocation in listxattr

2026-08-15 23:09:10 +02:00

Kconfig

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00

kernfs-internal.h

simpe_xattr: use per-sb cache

2026-06-06 15:21:41 +02:00

Makefile

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00

mount.c

kernfs: fix xattr race condition with multiple superblocks

2026-06-06 15:21:40 +02:00

symlink.c

kernfs: Replace strcpy(s, "../") with memcpy(s, "../", 4)

2026-07-18 16:07:22 +02:00