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| author |  Nick Piggin <npiggin@kernel.dk>
| 2011-01-07 17:49:57 +1100 |
|---|---|---|
| committer | Nick Piggin <npiggin@kernel.dk>
| 2011-01-07 17:50:29 +1100 |
| commit | 34286d6662308d82aed891852d04c7c3a2649b16 (patch) | |
| tree | c4b7311404d302e7cb94df7a4690298e1059910a /fs/ceph | |
| parent | fs: cache optimise dentry and inode for rcu-walk (diff) | |
| download | linux-34286d6662308d82aed891852d04c7c3a2649b16.tar.gz linux-34286d6662308d82aed891852d04c7c3a2649b16.tar.bz2 linux-34286d6662308d82aed891852d04c7c3a2649b16.zip | |
fs: rcu-walk aware d_revalidate method
Require filesystems be aware of .d_revalidate being called in rcu-walk
mode (nd->flags & LOOKUP_RCU). For now do a simple push down, returning
-ECHILD from all implementations.
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/dir.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index cc01cf826769..fa7ca04ee816 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -990,7 +990,12 @@ static int dir_lease_is_valid(struct inode *dir, struct dentry *dentry) */ static int ceph_d_revalidate(struct dentry *dentry, struct nameidata *nd) { - struct inode *dir = dentry->d_parent->d_inode; + struct inode *dir; + + if (nd->flags & LOOKUP_RCU) + return -ECHILD; + + dir = dentry->d_parent->d_inode; dout("d_revalidate %p '%.*s' inode %p offset %lld\n", dentry, dentry->d_name.len, dentry->d_name.name, dentry->d_inode, |