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authorChengguang Xu <cgxu519@gmx.com>2018-08-31 22:33:48 +0800
committerJan Kara <jack@suse.cz>2018-09-03 11:05:03 +0200
commit59fed3bf8a461ab07a8e57b42b6402e984c7cc62 (patch)
treeb331155ab43493a904f0ff164430cc0416ee506f /fs/ext2
parent849fe89ce6d7bb52d2903c79d2ff089d55e6ff8a (diff)
downloadlinux-59fed3bf8a461ab07a8e57b42b6402e984c7cc62.tar.bz2
ext2: cache NULL when both default_acl and acl are NULL
default_acl and acl of newly created inode will be initiated as ACL_NOT_CACHED in vfs function inode_init_always() and later will be updated by calling xxx_init_acl() in specific filesystems. However, when default_acl and acl are NULL, then they keep the value of ACL_NOT_CACHED. This patch changes the code to cache NULL for acl / default_acl in this case to save unnecessary ACL lookup in future. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext2')
-rw-r--r--fs/ext2/acl.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c
index 224c04abb2e5..cf4c77f8dd08 100644
--- a/fs/ext2/acl.c
+++ b/fs/ext2/acl.c
@@ -256,11 +256,15 @@ ext2_init_acl(struct inode *inode, struct inode *dir)
if (default_acl) {
error = __ext2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
posix_acl_release(default_acl);
+ } else {
+ inode->i_default_acl = NULL;
}
if (acl) {
if (!error)
error = __ext2_set_acl(inode, acl, ACL_TYPE_ACCESS);
posix_acl_release(acl);
+ } else {
+ inode->i_acl = NULL;
}
return error;
}