From: Yan <yanzheng@21cn.com>
Date: Tue, 5 Feb 2008 20:40:36 +0000 (-0500)
Subject: btrfs_drop_extents: handle BTRFS_INODE_REF_KEY types
X-Git-Tag: firefly_0821_release~15789^2~11^2~55^2~56^2~30^2~292
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7261009ceaee65e4683be6e474d1ea85a1b1b26c;p=firefly-linux-kernel-4.4.55.git

btrfs_drop_extents: handle BTRFS_INODE_REF_KEY types
It's possible "key.type == BTRFS_INODE_REF_KEY" and "key.offset >= end".

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 184bde1cfc3d..bfa4149c053d 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -507,11 +507,12 @@ next_slot:
 		slot = path->slots[0];
 		ret = 0;
 		btrfs_item_key_to_cpu(leaf, &key, slot);
-
-		if (key.offset >= end || key.objectid != inode->i_ino) {
+		if (btrfs_key_type(&key) == BTRFS_EXTENT_DATA_KEY &&
+		    key.offset >= end) {
 			goto out;
 		}
-		if (btrfs_key_type(&key) > BTRFS_EXTENT_DATA_KEY) {
+		if (btrfs_key_type(&key) > BTRFS_EXTENT_DATA_KEY ||
+		    key.objectid != inode->i_ino) {
 			goto out;
 		}
 		if (recow) {