From a62b940160d8125016e85046e68ae621c99e751f Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Fri, 3 Oct 2008 16:31:08 -0400 Subject: [PATCH] Btrfs: cast bio->bi_sector to a u64 before shifting On 32 bit machines without CONFIG_LBD, the bi_sector field is only 32 bits. Btrfs needs to cast it before shifting up, or we end up doing IO into the wrong place. Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 2 +- fs/btrfs/volumes.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index e5c9261dcbaa..ff0c35976657 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -386,7 +386,7 @@ int btrfs_merge_bio_hook(struct page *page, unsigned long offset, { struct btrfs_root *root = BTRFS_I(page->mapping->host)->root; struct btrfs_mapping_tree *map_tree; - u64 logical = bio->bi_sector << 9; + u64 logical = (u64)bio->bi_sector << 9; u64 length = 0; u64 map_length; int ret; diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index f63cf7621a01..2eed7f91f51a 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2187,7 +2187,7 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio, struct btrfs_mapping_tree *map_tree; struct btrfs_device *dev; struct bio *first_bio = bio; - u64 logical = bio->bi_sector << 9; + u64 logical = (u64)bio->bi_sector << 9; u64 length = 0; u64 map_length; struct btrfs_multi_bio *multi = NULL; -- 2.34.1