remove SWRITE* I/O types

These flags aren't real I/O types, but tell ll_rw_block to always
lock the buffer instead of giving up on a failed trylock.

Instead add a new write_dirty_buffer helper that implements this semantic
and use it from the existing SWRITE* callers.  Note that the ll_rw_block
code had a bug where it didn't promote WRITE_SYNC_PLUG properly, which
this patch fixes.

In the ufs code clean up the helper that used to call ll_rw_block
to mirror sync_dirty_buffer, which is the function it implements for
compound buffers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 8 insertions, 12 deletions

diff --git a/fs/ufs/util.c b/fs/ufs/util.c
index 85a7fc9e4a4e..d2c36d53fe66 100644
--- a/fs/ufs/util.c
+++ b/fs/ufs/util.c
@@ -113,21 +113,17 @@ void ubh_mark_buffer_uptodate (struct ufs_buffer_head * ubh, int flag)
         }
 }
 
-void ubh_ll_rw_block(int rw, struct ufs_buffer_head *ubh)
+void ubh_sync_block(struct ufs_buffer_head *ubh)
 {
-        if (!ubh)
-                return;
+        if (ubh) {
+                unsigned i;
 
-        ll_rw_block(rw, ubh->count, ubh->bh);
-}
+                for (i = 0; i < ubh->count; i++)
+                        write_dirty_buffer(ubh->bh[i], WRITE);
 
-void ubh_wait_on_buffer (struct ufs_buffer_head * ubh)
-{
-        unsigned i;
-        if (!ubh)
-                return;
-        for ( i = 0; i < ubh->count; i++ )
-                wait_on_buffer (ubh->bh[i]);
+                for (i = 0; i < ubh->count; i++)
+                        wait_on_buffer(ubh->bh[i]);
+        }
 }
 
 void ubh_bforget (struct ufs_buffer_head * ubh)