This is a note to let you know that I've just added the patch titled
jbd2: move superblock checksum calculation to jbd2_write_superblock()
to the 3.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
jbd2-move-superblock-checksum-calculation-to-jbd2_write_superblock.patch
and it can be found in the queue-3.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fe52d17cdd343ac43c85cf72940a58865b9d3bfb Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@xxxxxxx>
Date: Mon, 1 Jul 2013 08:12:38 -0400
Subject: jbd2: move superblock checksum calculation to jbd2_write_superblock()
From: Theodore Ts'o <tytso@xxxxxxx>
commit fe52d17cdd343ac43c85cf72940a58865b9d3bfb upstream.
Some of the functions which modify the jbd2 superblock were not
updating the checksum before calling jbd2_write_superblock(). Move
the call to jbd2_superblock_csum_set() to jbd2_write_superblock(), so
that the checksum is calculated consistently.
Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx>
Cc: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/jbd2/journal.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1320,6 +1320,7 @@ static int journal_reset(journal_t *jour
static void jbd2_write_superblock(journal_t *journal, int write_op)
{
struct buffer_head *bh = journal->j_sb_buffer;
+ journal_superblock_t *sb = journal->j_superblock;
int ret;
trace_jbd2_write_superblock(journal, write_op);
@@ -1341,6 +1342,7 @@ static void jbd2_write_superblock(journa
clear_buffer_write_io_error(bh);
set_buffer_uptodate(bh);
}
+ jbd2_superblock_csum_set(journal, sb);
get_bh(bh);
bh->b_end_io = end_buffer_write_sync;
ret = submit_bh(write_op, bh);
@@ -1437,7 +1439,6 @@ void jbd2_journal_update_sb_errno(journa
jbd_debug(1, "JBD2: updating superblock error (errno %d)\n",
journal->j_errno);
sb->s_errno = cpu_to_be32(journal->j_errno);
- jbd2_superblock_csum_set(journal, sb);
read_unlock(&journal->j_state_lock);
jbd2_write_superblock(journal, WRITE_SYNC);
Patches currently in stable-queue which might be from tytso@xxxxxxx are
queue-3.9/ext4-fix-corruption-when-online-resizing-a-fs-with-1k-block-size.patch
queue-3.9/jbd2-fix-theoretical-race-in-jbd2__journal_restart.patch
queue-3.9/ext3-ext4-don-t-mess-with-dir_file-f_pos-in-htree_dirblock_to_tree.patch
queue-3.9/ext4-check-error-return-from-ext4_write_inline_data_end.patch
queue-3.9/jbd2-move-superblock-checksum-calculation-to-jbd2_write_superblock.patch
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