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| author | Chris Mason | 2008-10-03 22:31:08 +0200 |
|---|---|---|
| committer | Chris Mason | 2008-10-03 22:31:08 +0200 |
| commit | a62b940160d8125016e85046e68ae621c99e751f (patch) | |
| tree | c26ebe1ccf229f829513e1fc85c8110928187e13 /fs/btrfs/inode.c | |
| parent | Btrfs: remove last_log_alloc allocator optimization (diff) | |
| download | kernel-qcow2-linux-a62b940160d8125016e85046e68ae621c99e751f.tar.gz kernel-qcow2-linux-a62b940160d8125016e85046e68ae621c99e751f.tar.xz kernel-qcow2-linux-a62b940160d8125016e85046e68ae621c99e751f.zip | |
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 <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 2 |
1 files changed, 1 insertions, 1 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; |