kernfs: fix missing kernfs_iattr_rwsem locking

When the kernfs_iattr_rwsem was introduced a case was missed.

The update of the kernfs directory node child count was also protected
by the kernfs_rwsem and needs to be included in the change so that the
child count (and so the inode n_link attribute) does not change while
holding the rwsem for read.

Fixes: 9caf69614225 ("kernfs: Introduce separate rwsem to protect inode attributes.")
Cc: stable <[email protected]>
Signed-off-by: Ian Kent <[email protected]>
Reviewed-By: Imran Khan <[email protected]>
Acked-by: Miklos Szeredi <[email protected]>
Cc: Anders Roxell <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Eric Sandeen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions