If __GFP_WAIT is set in the mask, set_extent_bit should return -ENOMEM to its caller to decide what to do on allocation failure, instead of BUG_ON.
Signed-off-by: Wang Sheng-Hui <[email protected]> --- fs/btrfs/extent_io.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index b67814c..fd2411e 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -720,7 +720,8 @@ int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, again: if (!prealloc && (mask & __GFP_WAIT)) { prealloc = alloc_extent_state(mask); - BUG_ON(!prealloc); + if (!prealloc) + return -ENOMEM; } spin_lock(&tree->lock); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
