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authorAkinobu Mita <akinobu.mita@gmail.com>2013-11-18 22:13:18 +0900
committerChris Mason <chris.mason@fusionio.com>2013-11-20 20:48:44 -0500
commit475bf36ffba2ad18631865a2429468dc6c7ea919 (patch)
treef7e0f94e4def76598b66861e9a9820b9ab86517d
parent4cd8587ce8fb79e49d1d6d1fc065f056188fb86a (diff)
btrfs: fix bio_size_ok() for max_sectors > 0xffff
The data type of max_sectors in queue settings is unsigned int. But this value is stored to the local variable whose type is unsigned short in bio_size_ok(). This can cause unexpected result when max_sectors > 0xffff. Cc: Chris Mason <chris.mason@fusionio.com> Cc: linux-btrfs@vger.kernel.org Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
-rw-r--r--fs/btrfs/volumes.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 0db637097862..92303f42baaa 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5394,7 +5394,7 @@ static int bio_size_ok(struct block_device *bdev, struct bio *bio,
{
struct bio_vec *prev;
struct request_queue *q = bdev_get_queue(bdev);
- unsigned short max_sectors = queue_max_sectors(q);
+ unsigned int max_sectors = queue_max_sectors(q);
struct bvec_merge_data bvm = {
.bi_bdev = bdev,
.bi_sector = sector,