Btrfs: walk compressed pages based on the nr_pages count instead of bytes
The byte walk counting was awkward and error prone. This uses the
number of pages sent the higher layer to build bios.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 9797592..6739424 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -338,7 +338,7 @@
if (!btrfs_test_flag(inode, NOCOMPRESS) &&
btrfs_test_opt(root, COMPRESS)) {
WARN_ON(pages);
- pages = kmalloc(sizeof(struct page *) * nr_pages, GFP_NOFS);
+ pages = kzalloc(sizeof(struct page *) * nr_pages, GFP_NOFS);
/* we want to make sure the amount of IO required to satisfy
* a random read is reasonably small, so we limit the size