kernfs: avoid iattr allocation in listxattr

Browse source

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>

...

This commit is contained in:

Yichong Chen 2026-07-31 20:05:54 +08:00 • committed by Danilo Krummrich

parent ddca0cd800

commit d5e81a5650

1 changed files with 2 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

fs/kernfs/inode.c

View file