From: Wang Sheng-Hui <shhuiw@xxxxxxxxx>
io_ctl_map_page is called by many functions in free-space-cache.
In some scenarios, the ->cur is not null, e.g. io_ctl_add_entry.
Remove the check here.
Signed-off-by: Wang Sheng-Hui <shhuiw@xxxxxxxxx>
---
fs/btrfs/free-space-cache.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index c3318cb..4ea66d4 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -307,7 +307,6 @@ static void io_ctl_unmap_page(struct io_ctl *io_ctl)
static void io_ctl_map_page(struct io_ctl *io_ctl, int clear)
{
- WARN_ON(io_ctl->cur);
BUG_ON(io_ctl->index >= io_ctl->num_pages);
io_ctl->page = io_ctl->pages[io_ctl->index++];
io_ctl->cur = kmap(io_ctl->page);
--
1.6.0.2
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