[PATCH 3/3] ext4: mark metadata blocks using bh flags

[Theodore Ts'o]

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..fd97b81 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();
 
+       mark_buffer_meta(bh);
+       mark_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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