[PATCH] Change ll_rw_block() calls in JBD

[Jan Kara]

  Hi,

  attached patch changes calls of ll_rw_block() in JBD to make sure the
data really reach the disk.

								Honza

-- 
Jan Kara <jack@xxxxxxx>
SuSE CR Labs
We must be sure that the current data in buffer are sent to disk. Hence
we have to call ll_rw_block() with SWRITE.

Signed-off-by: Jan Kara <jack@xxxxxxx>

diff -rupX /home/jack/.kerndiffexclude linux-2.6.12-1-forgetfix/fs/jbd/checkpoint.c linux-2.6.12-2-ll_rw_block-fix/fs/jbd/checkpoint.c
--- linux-2.6.12-1-forgetfix/fs/jbd/checkpoint.c	2005-06-28 13:26:18.000000000 +0200
+++ linux-2.6.12-2-ll_rw_block-fix/fs/jbd/checkpoint.c	2005-07-07 07:18:47.000000000 +0200
@@ -204,7 +204,7 @@ __flush_batch(journal_t *journal, struct
 	int i;
 
 	spin_unlock(&journal->j_list_lock);
-	ll_rw_block(WRITE, *batch_count, bhs);
+	ll_rw_block(SWRITE, *batch_count, bhs);
 	spin_lock(&journal->j_list_lock);
 	for (i = 0; i < *batch_count; i++) {
 		struct buffer_head *bh = bhs[i];
diff -rupX /home/jack/.kerndiffexclude linux-2.6.12-1-forgetfix/fs/jbd/commit.c linux-2.6.12-2-ll_rw_block-fix/fs/jbd/commit.c
--- linux-2.6.12-1-forgetfix/fs/jbd/commit.c	2005-07-06 01:22:13.000000000 +0200
+++ linux-2.6.12-2-ll_rw_block-fix/fs/jbd/commit.c	2005-07-07 07:18:20.000000000 +0200
@@ -358,7 +358,7 @@ write_out_data:
 					jbd_debug(2, "submit %d writes\n",
 							bufs);
 					spin_unlock(&journal->j_list_lock);
-					ll_rw_block(WRITE, bufs, wbuf);
+					ll_rw_block(SWRITE, bufs, wbuf);
 					journal_brelse_array(wbuf, bufs);
 					bufs = 0;
 					goto write_out_data;
@@ -381,7 +381,7 @@ write_out_data:
 
 	if (bufs) {
 		spin_unlock(&journal->j_list_lock);
-		ll_rw_block(WRITE, bufs, wbuf);
+		ll_rw_block(SWRITE, bufs, wbuf);
 		journal_brelse_array(wbuf, bufs);
 		spin_lock(&journal->j_list_lock);
 	}
diff -rupX /home/jack/.kerndiffexclude linux-2.6.12-1-forgetfix/fs/jbd/journal.c linux-2.6.12-2-ll_rw_block-fix/fs/jbd/journal.c
--- linux-2.6.12-1-forgetfix/fs/jbd/journal.c	2005-06-28 13:26:18.000000000 +0200
+++ linux-2.6.12-2-ll_rw_block-fix/fs/jbd/journal.c	2005-07-07 07:17:11.000000000 +0200
@@ -969,7 +969,7 @@ void journal_update_superblock(journal_t
 	if (wait)
 		sync_dirty_buffer(bh);
 	else
-		ll_rw_block(WRITE, 1, &bh);
+		ll_rw_block(SWRITE, 1, &bh);
 
 out:
 	/* If we have just flushed the log (by marking s_start==0), then
diff -rupX /home/jack/.kerndiffexclude linux-2.6.12-1-forgetfix/fs/jbd/revoke.c linux-2.6.12-2-ll_rw_block-fix/fs/jbd/revoke.c
--- linux-2.6.12-1-forgetfix/fs/jbd/revoke.c	2005-03-03 18:58:29.000000000 +0100
+++ linux-2.6.12-2-ll_rw_block-fix/fs/jbd/revoke.c	2005-07-07 07:12:34.000000000 +0200
@@ -613,7 +613,7 @@ static void flush_descriptor(journal_t *
 	set_buffer_jwrite(bh);
 	BUFFER_TRACE(bh, "write");
 	set_buffer_dirty(bh);
-	ll_rw_block(WRITE, 1, &bh);
+	ll_rw_block(SWRITE, 1, &bh);
 }
 #endif