Whoops, here's the right version of the patch.
>From 13fca323e9a8b63c08de7a4e05d3c702516b535d Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <ty...@mit.edu>
Date: Sun, 21 Apr 2013 16:45:54 -0400
Subject: [PATCH 3/3] ext4: mark metadata blocks using bh flags
This allows metadata writebacks which are issued via block device
writeback to be sent with the current write request flags.
Signed-off-by: "Theodore Ts'o" <ty...@mit.edu>
---
fs/ext4/ext4_jbd2.c | 2 ++
fs/ext4/inode.c | 6 +++++-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
index 0e1dc9e..451eb40 100644
--- a/fs/ext4/ext4_jbd2.c
+++ b/fs/ext4/ext4_jbd2.c
@@ -215,6 +215,8 @@ int __ext4_handle_dirty_metadata(const char *where,
unsigned int line,
might_sleep();
+ set_buffer_meta(bh);
+ set_buffer_prio(bh);
if (ext4_handle_valid(handle)) {
err = jbd2_journal_dirty_metadata(handle, bh);
if (err) {
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 62492e9..d7518e2 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1080,10 +1080,14 @@ retry_journal:
/* For write_end() in data=journal mode */
static int write_end_fn(handle_t *handle, struct buffer_head *bh)
{
+ int ret;
if (!buffer_mapped(bh) || buffer_freed(bh))
return 0;
set_buffer_uptodate(bh);
- return ext4_handle_dirty_metadata(handle, NULL, bh);
+ ret = ext4_handle_dirty_metadata(handle, NULL, bh);
+ clear_buffer_meta(bh);
+ clear_buffer_prio(bh);
+ return ret;
}
/*
--
1.7.12.rc0.22.gcdd159b
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