From: Dmitry Monakhov <dmonakhov@openvz.org>
To: linux-kernel@vger.kernel.org
Cc: darrick.wong@oracle.com, axboe@kernel.dk, tytso@mit.edu,
jack@suse.cz, hch@infradead.org,
Dmitry Monakhov <dmonakhov@openvz.org>
Subject: [PATCH 4/5] jbd2: use stable bdev pointer
Date: Thu, 6 Apr 2017 16:02:48 +0400 [thread overview]
Message-ID: <1491480169-1889-5-git-send-email-dmonakhov@openvz.org> (raw)
In-Reply-To: <1491480169-1889-1-git-send-email-dmonakhov@openvz.org>
This prevent us from panic if someone invalidate bh under us.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
---
fs/jbd2/revoke.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c
index f9aefcd..e3b791d 100644
--- a/fs/jbd2/revoke.c
+++ b/fs/jbd2/revoke.c
@@ -459,7 +459,8 @@ int jbd2_journal_cancel_revoke(handle_t *handle, struct journal_head *jh)
* state machine will get very upset later on. */
if (need_cancel) {
struct buffer_head *bh2;
- bh2 = __find_get_block(bh->b_bdev, bh->b_blocknr, bh->b_size);
+ bh2 = __find_get_block(journal->j_dev, bh->b_blocknr,
+ bh->b_size);
if (bh2) {
if (bh2 != bh)
clear_buffer_revoked(bh2);
--
2.9.3
next prev parent reply other threads:[~2017-04-06 12:03 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-06 12:02 [PATCH 0/5] falloc on blockdevice: what possibly can go whong? Dmitry Monakhov
2017-04-06 12:02 ` [PATCH 1/5] bh: Prevent panic on invalid BHs Dmitry Monakhov
2017-04-06 15:42 ` Christoph Hellwig
2017-04-06 16:01 ` Dmitry Monakhov
2017-04-06 12:02 ` [PATCH 2/5] block: protect bdevname from null pointer bdev Dmitry Monakhov
2017-04-06 12:02 ` [PATCH 3/5] bio: Protect submit_bio from bdevless bio-s Dmitry Monakhov
2017-04-06 12:02 ` Dmitry Monakhov [this message]
2017-04-06 12:02 ` [PATCH 5/5] block: truncate page cache only when necessary on fallocate Dmitry Monakhov
2017-04-06 15:43 ` Christoph Hellwig
2017-04-06 15:51 ` Dmitry Monakhov
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