[XFS] When issuing metadata readahead, submit bio with READA not READ.
SGI-PV: 944409
SGI-Modid: xfs-linux-melb:xfs-kern:26603a
Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index f135035..247adce 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -1156,16 +1156,16 @@
total_nr_pages = bp->b_page_count;
map_i = 0;
- if (bp->b_flags & _XBF_RUN_QUEUES) {
- bp->b_flags &= ~_XBF_RUN_QUEUES;
- rw = (bp->b_flags & XBF_READ) ? READ_SYNC : WRITE_SYNC;
- } else {
- rw = (bp->b_flags & XBF_READ) ? READ : WRITE;
- }
-
if (bp->b_flags & XBF_ORDERED) {
ASSERT(!(bp->b_flags & XBF_READ));
rw = WRITE_BARRIER;
+ } else if (bp->b_flags & _XBF_RUN_QUEUES) {
+ ASSERT(!(bp->b_flags & XBF_READ_AHEAD));
+ bp->b_flags &= ~_XBF_RUN_QUEUES;
+ rw = (bp->b_flags & XBF_WRITE) ? WRITE_SYNC : READ_SYNC;
+ } else {
+ rw = (bp->b_flags & XBF_WRITE) ? WRITE :
+ (bp->b_flags & XBF_READ_AHEAD) ? READA : READ;
}
/* Special code path for reading a sub page size buffer in --