From: Nikolay Borisov Date: Tue, 5 Dec 2017 07:29:19 +0000 (+0200) Subject: btrfs: Handle btrfs_set_extent_delalloc failure in fixup worker X-Git-Tag: v5.15~9244^2~95 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f3038ee3a3f1017a1cbe9907e31fa12d366c5dcb;p=platform%2Fkernel%2Flinux-starfive.git btrfs: Handle btrfs_set_extent_delalloc failure in fixup worker This function was introduced by 247e743cbe6e ("Btrfs: Use async helpers to deal with pages that have been improperly dirtied") and it didn't do any error handling then. This function might very well fail in ENOMEM situation, yet it's not handled, this could lead to inconsistent state. So let's handle the failure by setting the mapping error bit. Cc: stable@vger.kernel.org Signed-off-by: Nikolay Borisov Reviewed-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: David Sterba --- diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 034d733..9ad8c93 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2116,8 +2116,15 @@ again: goto out; } - btrfs_set_extent_delalloc(inode, page_start, page_end, 0, &cached_state, - 0); + ret = btrfs_set_extent_delalloc(inode, page_start, page_end, 0, + &cached_state, 0); + if (ret) { + mapping_set_error(page->mapping, ret); + end_extent_writepage(page, ret, page_start, page_end); + ClearPageChecked(page); + goto out; + } + ClearPageChecked(page); set_page_dirty(page); btrfs_delalloc_release_extents(BTRFS_I(inode), PAGE_SIZE);