Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'dm-3.17-fix2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fix from Mike Snitzer:
"Fix a race in the DM cache target that caused dirty blocks to be
marked as clean. This could cause no writeback to occur or spurious
dirty block counts"
* tag 'dm-3.17-fix2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm cache: fix race causing dirty blocks to be marked as clean
+2
-2
+2
-2
drivers/md/dm-cache-target.c
+2
-2
drivers/md/dm-cache-target.c
···
895
895
struct cache *cache = mg->cache;
896
896
897
897
if (mg->writeback) {
898
-
cell_defer(cache, mg->old_ocell, false);
899
898
clear_dirty(cache, mg->old_oblock, mg->cblock);
899
+
cell_defer(cache, mg->old_ocell, false);
900
900
cleanup_migration(mg);
901
901
return;
902
902
···
951
951
}
952
952
953
953
} else {
954
+
clear_dirty(cache, mg->new_oblock, mg->cblock);
954
955
if (mg->requeue_holder)
955
956
cell_defer(cache, mg->new_ocell, true);
956
957
else {
957
958
bio_endio(mg->new_ocell->holder, 0);
958
959
cell_defer(cache, mg->new_ocell, false);
959
960
}
960
-
clear_dirty(cache, mg->new_oblock, mg->cblock);
961
961
cleanup_migration(mg);
962
962
}
963
963
}