From: Robbie Ko <robbieko@xxxxxxxxxxxx>
When locking pages for delalloc, we check if it's dirty and mapping still
matches, if it does not match, we will return -EAGAIN and release all
pages.
Signed-off-by: Robbie Ko <robbieko@xxxxxxxxxxxx>
---
fs/btrfs/extent_io.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 68c96057ad2d..22fc47f9c900 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1999,7 +1999,8 @@ static int __process_pages_contig(struct address_space *mapping,
if (!PageDirty(pages[i]) ||
pages[i]->mapping != mapping) {
unlock_page(pages[i]);
- put_page(pages[i]);
+ for (; i < ret; i++)
+ put_page(pages[i]);
err = -EAGAIN;
goto out;
}
--
2.17.1
