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| author | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:50:02 +1100 |
|---|---|---|
| committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:50:30 +1100 |
| commit | 880566e17c4fce0d998d92610d32fcb9506aa6dd (patch) | |
| tree | 74b8adcfea568bd6c99dd73412aedcff3a0e496d /fs/xfs | |
| parent | 258a5aa8dfc6294f5f7df892023ee4d3e57c9841 (diff) | |
| download | lwn-880566e17c4fce0d998d92610d32fcb9506aa6dd.tar.gz lwn-880566e17c4fce0d998d92610d32fcb9506aa6dd.zip | |
xfs: provide simple rcu-walk ACL implementation
This simple implementation just checks for no ACLs on the inode, and
if so, then the rcu-walk may proceed, otherwise fail it.
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_acl.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c index 4b11eaf6a580..39f4f809bb68 100644 --- a/fs/xfs/linux-2.6/xfs_acl.c +++ b/fs/xfs/linux-2.6/xfs_acl.c @@ -225,9 +225,6 @@ xfs_check_acl(struct inode *inode, int mask, unsigned int flags) struct posix_acl *acl; int error = -EAGAIN; - if (flags & IPERM_FLAG_RCU) - return -ECHILD; - ip = XFS_I(inode); trace_xfs_check_acl(ip); @@ -238,6 +235,12 @@ xfs_check_acl(struct inode *inode, int mask, unsigned int flags) if (!XFS_IFORK_Q(ip)) return -EAGAIN; + if (flags & IPERM_FLAG_RCU) { + if (!negative_cached_acl(inode, ACL_TYPE_ACCESS)) + return -ECHILD; + return -EAGAIN; + } + acl = xfs_get_acl(inode, ACL_TYPE_ACCESS); if (IS_ERR(acl)) return PTR_ERR(acl); |