diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2025-03-28 16:19:07 +0100 |
|---|---|---|
| committer | Mikulas Patocka <mpatocka@redhat.com> | 2025-03-28 18:26:11 +0100 |
| commit | 9c565428788fb9b49066f94ab7b10efc686a0a4c (patch) | |
| tree | 903857e378af2777afef6f6bc3b61b37ca0d5bf4 | |
| parent | 2de510fccbca3d1906b55f4be5f1de83fa2424ef (diff) | |
dm-ebs: fix prefetch-vs-suspend race
There's a possible race condition in dm-ebs - dm bufio prefetch may be in
progress while the device is suspended. Fix this by calling
dm_bufio_client_reset in the postsuspend hook.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
| -rw-r--r-- | drivers/md/dm-ebs-target.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/dm-ebs-target.c b/drivers/md/dm-ebs-target.c index 18ae45dcbfb2..b19b0142a690 100644 --- a/drivers/md/dm-ebs-target.c +++ b/drivers/md/dm-ebs-target.c @@ -390,6 +390,12 @@ static int ebs_map(struct dm_target *ti, struct bio *bio) return DM_MAPIO_REMAPPED; } +static void ebs_postsuspend(struct dm_target *ti) +{ + struct ebs_c *ec = ti->private; + dm_bufio_client_reset(ec->bufio); +} + static void ebs_status(struct dm_target *ti, status_type_t type, unsigned int status_flags, char *result, unsigned int maxlen) { @@ -447,6 +453,7 @@ static struct target_type ebs_target = { .ctr = ebs_ctr, .dtr = ebs_dtr, .map = ebs_map, + .postsuspend = ebs_postsuspend, .status = ebs_status, .io_hints = ebs_io_hints, .prepare_ioctl = ebs_prepare_ioctl, |