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(parent: 7c9e6c1) | patch
dm exception store: fix misordered writes
authorMikulas Patocka <mpatocka@redhat.com>
Tue, 21 Oct 2008 16:44:56 +0000 (17:44 +0100)
committerAlasdair G Kergon <agk@redhat.com>
Tue, 21 Oct 2008 16:44:56 +0000 (17:44 +0100)
commit7acedc5b98a2fcff64f00c21110aae7d3ac2f7df
treeed9eda05b30d3606f1ad16e368c313b40c616c3dtree | snapshot (tar.gz zip)
parent7c9e6c17325fab380fbe9c9787680ff7d4a51abdcommit | diff
dm exception store: fix misordered writes

We must zero the next chunk on disk *before* writing out the current chunk, not
after.  Otherwise if the machine crashes at the wrong time, the "end of metadata"
marker may be missing.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: stable@kernel.org
drivers/md/dm-exception-store.c diff | blob | blame | history