Merge tag 'v3.15-rc6' into sched/core, to pick up the latest fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 16 insertions, 55 deletions

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 0b0728e5be2..233c6f96910 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -744,7 +744,6 @@ static int fill_inode(struct inode *inode,
 	    !__ceph_dir_is_complete(ci)) {
 		dout(" marking %p complete (empty)\n", inode);
 		__ceph_dir_set_complete(ci, atomic_read(&ci->i_release_count));
-		ci->i_max_offset = 2;
 	}
 no_change:
 	/* only update max_size on auth cap */
@@ -890,41 +889,6 @@ out_unlock:
 }
 
 /*
- * Set dentry's directory position based on the current dir's max, and
- * order it in d_subdirs, so that dcache_readdir behaves.
- *
- * Always called under directory's i_mutex.
- */
-static void ceph_set_dentry_offset(struct dentry *dn)
-{
-	struct dentry *dir = dn->d_parent;
-	struct inode *inode = dir->d_inode;
-	struct ceph_inode_info *ci;
-	struct ceph_dentry_info *di;
-
-	BUG_ON(!inode);
-
-	ci = ceph_inode(inode);
-	di = ceph_dentry(dn);
-
-	spin_lock(&ci->i_ceph_lock);
-	if (!__ceph_dir_is_complete(ci)) {
-		spin_unlock(&ci->i_ceph_lock);
-		return;
-	}
-	di->offset = ceph_inode(inode)->i_max_offset++;
-	spin_unlock(&ci->i_ceph_lock);
-
-	spin_lock(&dir->d_lock);
-	spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);
-	list_move(&dn->d_u.d_child, &dir->d_subdirs);
-	dout("set_dentry_offset %p %lld (%p %p)\n", dn, di->offset,
-	     dn->d_u.d_child.prev, dn->d_u.d_child.next);
-	spin_unlock(&dn->d_lock);
-	spin_unlock(&dir->d_lock);
-}
-
-/*
  * splice a dentry to an inode.
  * caller must hold directory i_mutex for this to be safe.
  *
@@ -933,7 +897,7 @@ static void ceph_set_dentry_offset(struct dentry *dn)
  * the caller) if we fail.
  */
 static struct dentry *splice_dentry(struct dentry *dn, struct inode *in,
-				    bool *prehash, bool set_offset)
+				    bool *prehash)
 {
 	struct dentry *realdn;
 
@@ -965,8 +929,6 @@ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in,
 	}
 	if ((!prehash || *prehash) && d_unhashed(dn))
 		d_rehash(dn);
-	if (set_offset)
-		ceph_set_dentry_offset(dn);
 out:
 	return dn;
 }
@@ -987,7 +949,6 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
 {
 	struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info;
 	struct inode *in = NULL;
-	struct ceph_mds_reply_inode *ininfo;
 	struct ceph_vino vino;
 	struct ceph_fs_client *fsc = ceph_sb_to_client(sb);
 	int err = 0;
@@ -1161,6 +1122,9 @@ retry_lookup:
 
 		/* rename? */
 		if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) {
+			struct inode *olddir = req->r_old_dentry_dir;
+			BUG_ON(!olddir);
+
 			dout(" src %p '%.*s' dst %p '%.*s'\n",
 			     req->r_old_dentry,
 			     req->r_old_dentry->d_name.len,
@@ -1180,13 +1144,10 @@ retry_lookup:
 			   rehashing bug in vfs_rename_dir */
 			ceph_invalidate_dentry_lease(dn);
 
-			/*
-			 * d_move() puts the renamed dentry at the end of
-			 * d_subdirs.  We need to assign it an appropriate
-			 * directory offset so we can behave when dir is
-			 * complete.
-			 */
-			ceph_set_dentry_offset(req->r_old_dentry);
+			/* d_move screws up sibling dentries' offsets */
+			ceph_dir_clear_complete(dir);
+			ceph_dir_clear_complete(olddir);
+
 			dout("dn %p gets new offset %lld\n", req->r_old_dentry,
 			     ceph_dentry(req->r_old_dentry)->offset);
 
@@ -1213,8 +1174,9 @@ retry_lookup:
 
 		/* attach proper inode */
 		if (!dn->d_inode) {
+			ceph_dir_clear_complete(dir);
 			ihold(in);
-			dn = splice_dentry(dn, in, &have_lease, true);
+			dn = splice_dentry(dn, in, &have_lease);
 			if (IS_ERR(dn)) {
 				err = PTR_ERR(dn);
 				goto done;
@@ -1235,17 +1197,16 @@ retry_lookup:
 		   (req->r_op == CEPH_MDS_OP_LOOKUPSNAP ||
 		    req->r_op == CEPH_MDS_OP_MKSNAP)) {
 		struct dentry *dn = req->r_dentry;
+		struct inode *dir = req->r_locked_dir;
 
 		/* fill out a snapdir LOOKUPSNAP dentry */
 		BUG_ON(!dn);
-		BUG_ON(!req->r_locked_dir);
-		BUG_ON(ceph_snap(req->r_locked_dir) != CEPH_SNAPDIR);
-		ininfo = rinfo->targeti.in;
-		vino.ino = le64_to_cpu(ininfo->ino);
-		vino.snap = le64_to_cpu(ininfo->snapid);
+		BUG_ON(!dir);
+		BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR);
 		dout(" linking snapped dir %p to dn %p\n", in, dn);
+		ceph_dir_clear_complete(dir);
 		ihold(in);
-		dn = splice_dentry(dn, in, NULL, true);
+		dn = splice_dentry(dn, in, NULL);
 		if (IS_ERR(dn)) {
 			err = PTR_ERR(dn);
 			goto done;
@@ -1407,7 +1368,7 @@ retry_lookup:
 		}
 
 		if (!dn->d_inode) {
-			dn = splice_dentry(dn, in, NULL, false);
+			dn = splice_dentry(dn, in, NULL);
 			if (IS_ERR(dn)) {
 				err = PTR_ERR(dn);
 				dn = NULL;