[XFS] only mark buffers done when all pages are uptodate in addition

replace PBF_NONE with an inverted PBF_DONE, so it's like all the other
flags.

SGI-PV: 942609
SGI-Modid: xfs-linux:xfs-kern:199136a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 4663f7dbff1c..660c24acb640 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -286,7 +286,7 @@ _pagebuf_initialize(
          * most cases but may be reset (e.g. XFS recovery).
          */
         pb->pb_buffer_length = pb->pb_count_desired = range_length;
-        pb->pb_flags = flags | PBF_NONE;
+        pb->pb_flags = flags;
         pb->pb_bn = XFS_BUF_DADDR_NULL;
         atomic_set(&pb->pb_pin_count, 0);
         init_waitqueue_head(&pb->pb_waiters);
@@ -458,8 +458,8 @@ _pagebuf_lookup_pages(
                         unlock_page(bp->pb_pages[i]);
         }
 
-        if (page_count)
-                bp->pb_flags &= ~PBF_NONE;
+        if (page_count == bp->pb_page_count)
+                bp->pb_flags |= PBF_DONE;
 
         PB_TRACE(bp, "lookup_pages", (long)page_count);
         return error;
@@ -1119,7 +1119,7 @@ pagebuf_iodone(
 {
         pb->pb_flags &= ~(PBF_READ | PBF_WRITE);
         if (pb->pb_error == 0)
-                pb->pb_flags &= ~PBF_NONE;
+                pb->pb_flags |= PBF_DONE;
 
         PB_TRACE(pb, "iodone", pb->pb_iodone);