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author | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 06:49:57 (GMT) |
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committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 06:50:29 (GMT) |
commit | 34286d6662308d82aed891852d04c7c3a2649b16 (patch) | |
tree | c4b7311404d302e7cb94df7a4690298e1059910a /fs/ecryptfs | |
parent | 44a7d7a878c9cbb74f236ea755b25b6b2e26a9a9 (diff) | |
download | linux-fsl-qoriq-34286d6662308d82aed891852d04c7c3a2649b16.tar.xz |
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/ecryptfs')
-rw-r--r-- | fs/ecryptfs/dentry.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/ecryptfs/dentry.c b/fs/ecryptfs/dentry.c index 906e803..6fc4f31 100644 --- a/fs/ecryptfs/dentry.c +++ b/fs/ecryptfs/dentry.c @@ -44,12 +44,17 @@ */ static int ecryptfs_d_revalidate(struct dentry *dentry, struct nameidata *nd) { - struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry); - struct vfsmount *lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry); + struct dentry *lower_dentry; + struct vfsmount *lower_mnt; struct dentry *dentry_save; struct vfsmount *vfsmount_save; int rc = 1; + if (nd->flags & LOOKUP_RCU) + return -ECHILD; + + lower_dentry = ecryptfs_dentry_to_lower(dentry); + lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry); if (!lower_dentry->d_op || !lower_dentry->d_op->d_revalidate) goto out; dentry_save = nd->path.dentry; |