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authorSage Weil <sage@newdream.net>2011-03-15 15:53:40 -0700
committerSage Weil <sage@newdream.net>2011-11-03 09:23:49 -0700
commitb58dc4100b9190f2cb437f1f67ffcb9f9acc4923 (patch)
tree5956065af3d9b126b8ae4a37551837c389f12702 /fs/ceph/dir.c
parent3f8ddb032afa729d4bad1bf2965d3ec068de6b72 (diff)
ceph: clear parent D_COMPLETE flag when on dentry prune
When the VFS prunes a dentry from the cache, clear the D_COMPLETE flag on the parent dentry. Do this for the live and snapshotted namespaces. Do not bother for the .snap dir contents, since we do not cache that. Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/dir.c')
-rw-r--r--fs/ceph/dir.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 382abc9a6a5..97fb155b324 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1092,7 +1092,33 @@ static int ceph_snapdir_d_revalidate(struct dentry *dentry,
return 1;
}
+/*
+ * When the VFS prunes a dentry from the cache, we need to clear the
+ * complete flag on the parent directory.
+ *
+ * Called under dentry->d_lock.
+ */
+static void ceph_d_prune(struct dentry *dentry)
+{
+ struct ceph_dentry_info *di;
+
+ dout("d_release %p\n", dentry);
+
+ /* do we have a valid parent? */
+ if (!dentry->d_parent || IS_ROOT(dentry))
+ return;
+
+ /* if we are not hashed, we don't affect D_COMPLETE */
+ if (d_unhashed(dentry))
+ return;
+ /*
+ * we hold d_lock, so d_parent is stable, and d_fsdata is never
+ * cleared until d_release
+ */
+ di = ceph_dentry(dentry->d_parent);
+ clear_bit(CEPH_D_COMPLETE, &di->flags);
+}
/*
* read() on a dir. This weird interface hack only works if mounted
@@ -1306,6 +1332,7 @@ const struct inode_operations ceph_dir_iops = {
const struct dentry_operations ceph_dentry_ops = {
.d_revalidate = ceph_d_revalidate,
.d_release = ceph_d_release,
+ .d_prune = ceph_d_prune,
};
const struct dentry_operations ceph_snapdir_dentry_ops = {
@@ -1315,4 +1342,5 @@ const struct dentry_operations ceph_snapdir_dentry_ops = {
const struct dentry_operations ceph_snap_dentry_ops = {
.d_release = ceph_d_release,
+ .d_prune = ceph_d_prune,
};