[XFS] stop background sync from waiting for in-use inodes

SGI Modid: xfs-linux:xfs-kern:191586a

Signed-off-by: Daniel Moore <dxm@sgi.com>
Signed-off-by: Christoph Hellwig <hch@sgi.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 76a84758073a..1e71a9633d8f 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -725,9 +725,12 @@ xfs_page_state_convert(
         __uint64_t              end_offset;
         pgoff_t                 end_index, last_index, tlast;
         int                     len, err, i, cnt = 0, uptodate = 1;
-        int                     flags = startio ? 0 : BMAPI_TRYLOCK;
+        int                     flags;
         int                     page_dirty, delalloc = 0;
 
+        /* wait for other IO threads? */
+        flags = (startio && wbc->sync_mode != WB_SYNC_NONE) ? 0 : BMAPI_TRYLOCK;
+
         /* Is this page beyond the end of the file? */
         offset = i_size_read(inode);
         end_index = offset >> PAGE_CACHE_SHIFT;