Miklos Szeredi 332f606b32 ovl: enable RCU'd ->get_acl() ... Overlayfs does not cache ACL's (to avoid double caching). Instead it just calls the underlying filesystem's i_op->get_acl(), which will return the cached value, if possible. In rcu path walk, however, get_cached_acl_rcu() is employed to get the value from the cache, which will fail on overlayfs resulting in dropping out of rcu walk mode. This can result in a big performance hit in certain situations. Fix by calling ->get_acl() with rcu=true in case of ACL_DONT_CACHE (which indicates pass-through) Reported-by: garyhuang <zjh.20052005@163.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>		2021-08-18 22:08:24 +02:00
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copy_up.c
dir.c
export.c
file.c
inode.c	ovl: enable RCU'd ->get_acl()	2021-08-18 22:08:24 +02:00
Kconfig
Makefile
namei.c
overlayfs.h
ovl_entry.h
readdir.c
super.c
util.c