btrfs: simplify btrfs_iget

Don't open-code iget_failed(), don't bother with btrfs_free_path(NULL),
move handling of positive return values of btrfs_lookup_inode() from
btrfs_read_locked_inode() to btrfs_iget() and kill now obviously
pointless ASSERT() in there.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index cd99ce8..3f51ddc 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3604,18 +3604,15 @@ static int btrfs_read_locked_inode(struct inode *inode)
                filled = true;
 
        path = btrfs_alloc_path();
-       if (!path) {
-               ret = -ENOMEM;
-               goto make_bad;
-       }
+       if (!path)
+               return -ENOMEM;
 
        memcpy(&location, &BTRFS_I(inode)->location, sizeof(location));
 
        ret = btrfs_lookup_inode(NULL, root, path, &location, 0);
        if (ret) {
-               if (ret > 0)
-                       ret = -ENOENT;
-               goto make_bad;
+               btrfs_free_path(path);
+               return ret;
        }
 
        leaf = path->nodes[0];
@@ -3768,10 +3765,6 @@ cache_acl:
 
        btrfs_sync_inode_flags_to_i_flags(inode);
        return 0;
-
-make_bad:
-       btrfs_free_path(path);
-       return ret;
 }
 
 /*
@@ -5702,11 +5695,15 @@ struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
                        if (new)
                                *new = 1;
                } else {
-                       make_bad_inode(inode);
-                       unlock_new_inode(inode);
-                       iput(inode);
-                       ASSERT(ret < 0);
-                       inode = ERR_PTR(ret < 0 ? ret : -ESTALE);
+                       iget_failed(inode);
+                       /*
+                        * ret > 0 can come from btrfs_search_slot called by
+                        * btrfs_read_locked_inode, this means the inode item
+                        * was not found.
+                        */
+                       if (ret > 0)
+                               ret = -ENOENT;
+                       inode = ERR_PTR(ret);
                }
        }