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    Subject[PATCH 4.14 206/222] btrfs: reset max_extent_size on clear in a bitmap
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Josef Bacik <jbacik@fb.com>

    commit 553cceb49681d60975d00892877d4c871bf220f9 upstream.

    We need to clear the max_extent_size when we clear bits from a bitmap
    since it could have been from the range that contains the
    max_extent_size.

    CC: stable@vger.kernel.org # 4.4+
    Reviewed-by: Liu Bo <bo.liu@linux.alibaba.com>
    Signed-off-by: Josef Bacik <jbacik@fb.com>
    Signed-off-by: David Sterba <dsterba@suse.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/btrfs/free-space-cache.c | 2 ++
    1 file changed, 2 insertions(+)

    --- a/fs/btrfs/free-space-cache.c
    +++ b/fs/btrfs/free-space-cache.c
    @@ -1710,6 +1710,8 @@ static inline void __bitmap_clear_bits(s
    bitmap_clear(info->bitmap, start, count);

    info->bytes -= bytes;
    + if (info->max_extent_size > ctl->unit)
    + info->max_extent_size = 0;
    }

    static void bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,

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