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| author | Josef Bacik <josef@redhat.com> | 2009-09-12 00:11:20 +0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2009-09-22 03:23:49 +0400 |
| commit | f019f4264ae8c0169332592bcee419ee90e7c827 (patch) | |
| tree | 61a2953e59b5883f376e5b6ba3938fa2721c97be /fs/btrfs/free-space-cache.c | |
| parent | 0a24325e6d8cfb150eba0aa279615ef27b5f6aec (diff) | |
| download | linux-f019f4264ae8c0169332592bcee419ee90e7c827.tar.xz | |
Btrfs: fix bitmap size tracking
When we first go to add free space, we allocate a new info and set the offset
and bytes to the space we are adding. This is fine, except we actually set the
size of a bitmap as we set the bits in it, so if we add space to a bitmap, we'd
end up counting the same space twice. This isn't a huge deal, it just makes
the allocator behave weirdly since it will think that a bitmap entry has more
space than it ends up actually having. I used a BUG_ON() to catch when this
problem happened, and with this patch I no longer get the BUG_ON().
Signed-off-by: Josef Bacik <jbacik@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/free-space-cache.c')
| -rw-r--r-- | fs/btrfs/free-space-cache.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 5edcee3a617f..4eb296426061 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -403,6 +403,7 @@ static void add_new_bitmap(struct btrfs_block_group_cache *block_group, BUG_ON(block_group->total_bitmaps >= max_bitmaps); info->offset = offset_to_bitmap(block_group, offset); + info->bytes = 0; link_free_space(block_group, info); block_group->total_bitmaps++; |