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[1/9] ceph: use page_offset() in ceph_writepages_start()

Message ID 515DA7CA.4040808@inktank.com (mailing list archive)
State New, archived
Headers show

Commit Message

Alex Elder April 4, 2013, 4:18 p.m. UTC 
There's one spot in ceph_writepages_start() that open-codes what
page_offset() does safely.  Use the macro so we don't have to worry
about wrapping.

This resolves:
    http://tracker.ceph.com/issues/4648

Signed-off-by: Alex Elder <elder@inktank.com>
---
 fs/ceph/addr.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 67d4965..6a5a08e 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -900,7 +900,7 @@  get_more_pages:
 		}

 		/* submit the write */
-		offset = req->r_data_out.pages[0]->index << PAGE_CACHE_SHIFT;
+		offset = page_offset(req->r_data_out.pages[0]);
 		len = min((snap_size ? snap_size : i_size_read(inode)) - offset,
 			  (u64)locked_pages << PAGE_CACHE_SHIFT);
 		dout("writepages got %d pages at %llu~%llu\n",