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dm integrity: change 'suspending' variable from bool to int
Early alpha processors can't write a byte or short atomically - they read 8 bytes, modify the byte or two bytes in registers and write back 8 bytes. The modification of the variable "suspending" may race with modification of the variable "failed". Fix this by changing "suspending" to an int. Cc: stable@vger.kernel.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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@ -178,7 +178,7 @@ struct dm_integrity_c {
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__u8 sectors_per_block;
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unsigned char mode;
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bool suspending;
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int suspending;
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int failed;
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@ -2210,7 +2210,7 @@ static void dm_integrity_postsuspend(struct dm_target *ti)
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del_timer_sync(&ic->autocommit_timer);
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ic->suspending = true;
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WRITE_ONCE(ic->suspending, 1);
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queue_work(ic->commit_wq, &ic->commit_work);
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drain_workqueue(ic->commit_wq);
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@ -2220,7 +2220,7 @@ static void dm_integrity_postsuspend(struct dm_target *ti)
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dm_integrity_flush_buffers(ic);
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}
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ic->suspending = false;
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WRITE_ONCE(ic->suspending, 0);
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BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));
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