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Subject[PATCH v2 4/5] jfs: cache NULL when both default_acl and acl are NULL
Date
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.
Howerver, when default_acl and acl are NULL then they keep the value
of ACL_NOT_CACHED, this patch tries to cache NULL for acl/default_acl
in this case.

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
---
v1->v2:
- Coding style change.

fs/jfs/acl.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
index 2e71b6e7e646..8c06a6ea862d 100644
--- a/fs/jfs/acl.c
+++ b/fs/jfs/acl.c
@@ -146,12 +146,16 @@ int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir)
if (default_acl) {
rc = __jfs_set_acl(tid, inode, ACL_TYPE_DEFAULT, default_acl);
posix_acl_release(default_acl);
+ } else {
+ inode->i_default_acl = NULL;
}

if (acl) {
if (!rc)
rc = __jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl);
posix_acl_release(acl);
+ } else {
+ inode->i_acl = NULL;
}

JFS_IP(inode)->mode2 = (JFS_IP(inode)->mode2 & 0xffff0000) |
--
2.17.1
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