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| author | Nick Piggin | 2011-01-07 07:49:57 +0100 |
|---|---|---|
| committer | Nick Piggin | 2011-01-07 07:50:29 +0100 |
| commit | 34286d6662308d82aed891852d04c7c3a2649b16 (patch) | |
| tree | c4b7311404d302e7cb94df7a4690298e1059910a /fs/ocfs2 | |
| parent | fs: cache optimise dentry and inode for rcu-walk (diff) | |
| download | kernel-qcow2-linux-34286d6662308d82aed891852d04c7c3a2649b16.tar.gz kernel-qcow2-linux-34286d6662308d82aed891852d04c7c3a2649b16.tar.xz kernel-qcow2-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/ocfs2')
| -rw-r--r-- | fs/ocfs2/dcache.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c index 4d54c60ceee4..0310b16a7238 100644 --- a/fs/ocfs2/dcache.c +++ b/fs/ocfs2/dcache.c @@ -52,9 +52,15 @@ void ocfs2_dentry_attach_gen(struct dentry *dentry) static int ocfs2_dentry_revalidate(struct dentry *dentry, struct nameidata *nd) { - struct inode *inode = dentry->d_inode; + struct inode *inode; int ret = 0; /* if all else fails, just return false */ - struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb); + struct ocfs2_super *osb; + + if (nd->flags & LOOKUP_RCU) + return -ECHILD; + + inode = dentry->d_inode; + osb = OCFS2_SB(dentry->d_sb); mlog_entry("(0x%p, '%.*s')\n", dentry, dentry->d_name.len, dentry->d_name.name); |