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Btrfs: walk compressed pages based on the nr_pages count instead of bytes

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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>
This commit is contained in:
Chris Mason
2008-10-30 13:22:14 -04:00
parent 87ef2bb46b
commit cfbc246eaa
2 changed files with 6 additions and 3 deletions
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2
fs/btrfs/inode.c
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@@ -338,7 +338,7 @@ again:
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