Do not access the bio after generic_make_request
We should never access a bio after generic_make_request - there's no guarantee
it still exists.
Signed-off-by: Olaf Kirch <[EMAIL PROTECTED]>
Signed-off-by: Alasdair G Kergon <[EMAIL PROTECTED]>
Cc: Jens Axboe <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
Signed-off-by: Chris Wright <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/md/dm-crypt.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index bffaf1c..28831a9 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -655,9 +655,12 @@ static void process_write(struct crypt_io *io)
generic_make_request(clone);
+ /* Do not reference clone after this - it
+ * may be gone already. */
+
/* out of memory -> run queues */
if (remaining)
- congestion_wait(bio_data_dir(clone), HZ/100);
+ congestion_wait(WRITE, HZ/100);
}
}
--
1.5.2.4
--
-
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