diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-08-04 16:44:40 -1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-08-04 16:44:40 -1000 |
| commit | 24f0eed2668b059e847ff145848ddacb75419acc (patch) | |
| tree | 010c89c06e191b068f8a078b10bfaf1d3699c834 /fs/namei.c | |
| parent | 8b6b4628126fd73d0a53b499a26133c15b73c1e6 (diff) | |
| parent | 3567866bf26190d1e734c975c907eb06e923ba23 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
RCUify freeing acls, let check_acl() go ahead in RCU mode if acl is cached
get rid of boilerplate switches in posix_acl.h
fix block device fallout from ->fsync() changes
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/fs/namei.c b/fs/namei.c index 445fd5da11fa..3d607bd80e09 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -179,19 +179,14 @@ static int check_acl(struct inode *inode, int mask) #ifdef CONFIG_FS_POSIX_ACL struct posix_acl *acl; - /* - * Under RCU walk, we cannot even do a "get_cached_acl()", - * because that involves locking and getting a refcount on - * a cached ACL. - * - * So the only case we handle during RCU walking is the - * case of a cached "no ACL at all", which needs no locks - * or refcounts. - */ if (mask & MAY_NOT_BLOCK) { - if (negative_cached_acl(inode, ACL_TYPE_ACCESS)) + acl = get_cached_acl_rcu(inode, ACL_TYPE_ACCESS); + if (!acl) return -EAGAIN; - return -ECHILD; + /* no ->get_acl() calls in RCU mode... */ + if (acl == ACL_NOT_CACHED) + return -ECHILD; + return posix_acl_permission(inode, acl, mask); } acl = get_cached_acl(inode, ACL_TYPE_ACCESS); |