[XFS] Fix a writepage regression where we accidentally stopped honouring

nonblock mode with the new IO path code (since 2.6.16).

SGI-PV: 951662
SGI-Modid: xfs-linux-melb:xfs-kern:25676a

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

diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 6cbbd16..4d191ef 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -870,12 +870,14 @@ xfs_page_state_convert(
        pgoff_t                 end_index, last_index, tlast;
        ssize_t                 size, len;
        int                     flags, err, iomap_valid = 0, uptodate = 1;
-       int                     page_dirty, count = 0, trylock_flag = 0;
+       int                     page_dirty, count = 0;
+       int                     trylock = 0;
        int                     all_bh = unmapped;
 
-       /* wait for other IO threads? */
-       if (startio && (wbc->sync_mode == WB_SYNC_NONE && wbc->nonblocking))
-               trylock_flag |= BMAPI_TRYLOCK;
+       if (startio) {
+               if (wbc->sync_mode == WB_SYNC_NONE && wbc->nonblocking)
+                       trylock |= BMAPI_TRYLOCK;
+       }
 
        /* Is this page beyond the end of the file? */
        offset = i_size_read(inode);
@@ -956,15 +958,13 @@ xfs_page_state_convert(
 
                        if (buffer_unwritten(bh)) {
                                type = IOMAP_UNWRITTEN;
-                               flags = BMAPI_WRITE|BMAPI_IGNSTATE;
+                               flags = BMAPI_WRITE | BMAPI_IGNSTATE;
                        } else if (buffer_delay(bh)) {
                                type = IOMAP_DELAY;
-                               flags = BMAPI_ALLOCATE;
-                               if (!startio)
-                                       flags |= trylock_flag;
+                               flags = BMAPI_ALLOCATE | trylock;
                        } else {
                                type = IOMAP_NEW;
-                               flags = BMAPI_WRITE|BMAPI_MMAP;
+                               flags = BMAPI_WRITE | BMAPI_MMAP;
                        }
 
                        if (!iomap_valid) {