btrfs: clear __GFP_FS flag in the space cache inode

the object id of the space cache inode's key is allocated from the relative root, just like the regular file. So we can't identify space cache inode by checking the object id of the inode's key, and we have to clear __GFP_FS flag at the time we look up the space cache inode. Signed-off-by: Miao Xie <[email protected]> Signed-off-by: Liu Bo <[email protected]> Signed-off-by: Chris Mason <[email protected]>
mna · Apr 5, 2011 · adae52b · adae52b
1 parent 6e8df2a
commit adae52b
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diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
@@ -81,6 +81,8 @@ struct inode *lookup_free_space_inode(struct btrfs_root *root,
 		return ERR_PTR(-ENOENT);
 	}
 
+	inode->i_mapping->flags &= ~__GFP_FS;
+
 	spin_lock(&block_group->lock);
 	if (!root->fs_info->closing) {
 		block_group->inode = igrab(inode);

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
@@ -2535,8 +2535,6 @@ static void btrfs_read_locked_inode(struct inode *inode)
 	BTRFS_I(inode)->flags = btrfs_inode_flags(leaf, inode_item);
 
 	alloc_group_block = btrfs_inode_block_group(leaf, inode_item);
-	if (location.objectid == BTRFS_FREE_SPACE_OBJECTID)
-		inode->i_mapping->flags &= ~__GFP_FS;
 
 	/*
 	 * try to precache a NULL acl entry for files that don't have