[<prev] [next>] [<thread-prev] [thread-next>] [month] [year] [list]
Date: Sat, 5 Jul 2008 13:35:38 -0400
From: Theodore Ts'o <tytso@....edu>
To: Ext4 Developers List <linux-ext4@...r.kernel.org>,
Linux Kernel Developers List <linux-kernel@...r.kernel.org>
Subject: [PATCH 12/52] jbd2: Add commit time into the commit block
Carlo Wood has demonstrated that it's possible to recover deleted
files from the journal. Something that will make this easier is if we
can put the time of the commit into commit block.
Signed-off-by: "Theodore Ts'o" <tytso@....edu>
---
fs/jbd2/commit.c | 3 +++
include/linux/jbd2.h | 2 ++
2 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index a2ed72f..92b6ac3 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -112,6 +112,7 @@ static int journal_submit_commit_record(journal_t *journal,
struct buffer_head *bh;
int ret;
int barrier_done = 0;
+ struct timespec now = current_kernel_time();
if (is_journal_aborted(journal))
return 0;
@@ -126,6 +127,8 @@ static int journal_submit_commit_record(journal_t *journal,
tmp->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
tmp->h_blocktype = cpu_to_be32(JBD2_COMMIT_BLOCK);
tmp->h_sequence = cpu_to_be32(commit_transaction->t_tid);
+ tmp->h_commit_sec = cpu_to_be64(now.tv_sec);
+ tmp->h_commit_nsec = cpu_to_be32(now.tv_nsec);
if (JBD2_HAS_COMPAT_FEATURE(journal,
JBD2_FEATURE_COMPAT_CHECKSUM)) {
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index d147f0f..ec9cadf 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -168,6 +168,8 @@ struct commit_header {
unsigned char h_chksum_size;
unsigned char h_padding[2];
__be32 h_chksum[JBD2_CHECKSUM_BYTES];
+ __be64 h_commit_sec;
+ __be32 h_commit_nsec;
};
/*
--
1.5.6.rc3.1.g36b7.dirty
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Hosted by DataForce ISP -
Powered by Openwall GNU/*/Linux