From: Jeff Mahoney Date: Thu, 22 Jun 2017 13:51:47 +0000 (-0400) Subject: btrfs: account for pinned bytes in should_alloc_chunk X-Git-Tag: v4.14-rc3~14^2~56 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f44d2287d2879f50b921e909b2377d6dcba3e251;p=platform%2Fkernel%2Flinux-rpi3.git btrfs: account for pinned bytes in should_alloc_chunk In a heavy write scenario, we can end up with a large number of pinned bytes. This can translate into (very) premature ENOSPC because pinned bytes must be accounted for when allowing a reservation but aren't accounted for when deciding whether to create a new chunk. This patch adds the accounting to should_alloc_chunk so that we can create the chunk. Signed-off-by: Jeff Mahoney Signed-off-by: David Sterba --- diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 7d7abc0..b929fe2 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4419,7 +4419,7 @@ static int should_alloc_chunk(struct btrfs_fs_info *fs_info, { struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv; u64 num_bytes = sinfo->total_bytes - sinfo->bytes_readonly; - u64 num_allocated = sinfo->bytes_used + sinfo->bytes_reserved; + u64 num_allocated = sinfo->bytes_used + sinfo->bytes_reserved + sinfo->bytes_pinned; u64 thresh; if (force == CHUNK_ALLOC_FORCE)