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| author | Milan Broz <mbroz@redhat.com> | 2008-02-08 05:09:49 +0300 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2008-02-08 05:09:49 +0300 |
| commit | 7e5c1e830b2310359a4cfbbf89895dde4abd996a (patch) | |
| tree | 143d5ff1998b115689347f0346a25b622a888739 /drivers/md | |
| parent | df922075f2a55b1ae71a6fe589c1cc1b91381f4f (diff) | |
| download | linux-7e5c1e830b2310359a4cfbbf89895dde4abd996a.tar.xz | |
dm: add missing memory barrier to dm_suspend
Add memory barrier to fix atomic_read of pending value.
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index f2d24eb3208c..466a6bf0742f 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1410,6 +1410,7 @@ int dm_suspend(struct mapped_device *md, unsigned suspend_flags) while (1) { set_current_state(TASK_INTERRUPTIBLE); + smp_mb(); if (!atomic_read(&md->pending) || signal_pending(current)) break; |