Messages in this thread Patch in this message | | | Date | Sat, 31 Mar 2012 15:25:17 +0800 | From | Wang Sheng-Hui <> | Subject | [PATCH] btrfs/extent_io.c: return -ENOMEM instead of BUG_ON on allocation failure in set_extent_bit if __GFP_WAIT is set in the mask |
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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 <shhuiw@gmail.com> --- 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
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