Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=de26103de56a0c482ad21296eae9b06deefc8e62
Commit: de26103de56a0c482ad21296eae9b06deefc8e62
Parent: 0b776eb5426752d4e53354ac89e3710d857e09a7
Author: Jens Axboe <[EMAIL PROTECTED]>
AuthorDate: Tue Oct 23 20:35:58 2007 +0200
Committer: Jens Axboe <[EMAIL PROTECTED]>
CommitDate: Tue Oct 23 20:35:58 2007 +0200
[SG] Add debug check for page alignment
Suggested by Boaz Harrosh <[EMAIL PROTECTED]>
Signed-off-by: Jens Axboe <[EMAIL PROTECTED]>
---
include/linux/scatterlist.h | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h
index 42daf5e..df7ddce 100644
--- a/include/linux/scatterlist.h
+++ b/include/linux/scatterlist.h
@@ -41,6 +41,11 @@ static inline void sg_set_page(struct scatterlist *sg,
struct page *page)
{
unsigned long page_link = sg->page_link & 0x3;
+ /*
+ * In order for the low bit stealing approach to work, pages
+ * must be aligned at a 32-bit boundary as a minimum.
+ */
+ BUG_ON((unsigned long) page & 0x03);
#ifdef CONFIG_DEBUG_SG
BUG_ON(sg->sg_magic != SG_MAGIC);
#endif
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
