On Thu, Sep 08, 2011 at 10:22:01AM +0800, Li Zefan wrote:
> It's not a big deal if we fail to allocate the array, and instead of
> panic we can just give up compressing.
Makes sense.
> Signed-off-by: Li Zefan <l...@cn.fujitsu.com>
Reviewed-by: David Sterba <dste...@suse.cz>
> ---
> fs/btrfs/inode.c | 6 +++++-
> 1 files changed, 5 insertions(+), 1 deletions(-)
>
> diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
> index 0ccc743..63b4fc0 100644
> --- a/fs/btrfs/inode.c
> +++ b/fs/btrfs/inode.c
> @@ -393,7 +393,10 @@ again:
> (BTRFS_I(inode)->flags & BTRFS_INODE_COMPRESS))) {
> WARN_ON(pages);
> pages = kzalloc(sizeof(struct page *) * nr_pages, GFP_NOFS);
> - BUG_ON(!pages);
> + if (!pages) {
> + /* just bail out to the uncompressed code */
> + goto cont;
> + }
>
> if (BTRFS_I(inode)->force_compress)
> compress_type = BTRFS_I(inode)->force_compress;
> @@ -424,6 +427,7 @@ again:
> will_compress = 1;
> }
> }
> +cont:
> if (start == 0) {
> trans = btrfs_join_transaction(root);
> BUG_ON(IS_ERR(trans));
> -- 1.7.3.1
> --
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