dm kcopyd: fix job_pool leak
authorAlasdair G Kergon <agk@redhat.com>
Sun, 23 Oct 2011 19:55:17 +0000 (20:55 +0100)
committerAlasdair G Kergon <agk@redhat.com>
Sun, 23 Oct 2011 19:55:17 +0000 (20:55 +0100)
commitd136f2efdf3a4faba47f58603f8ace2207234d75
tree0b2e94980503cdae7f326219d792d98b10e54a0f
parent899e3ee404961a90b828ad527573aaaac39f0ab1
dm kcopyd: fix job_pool leak

Fix memory leak introduced by commit a6e50b409d3f9e0833e69c3c9cca822e8fa4adbb
(dm snapshot: skip reading origin when overwriting complete chunk).

When allocating a set of jobs from kc->job_pool, job->master_job must be
set (to point to itself) so that the mempool item gets freed when the
master_job completes.

master_job was introduced by commit c6ea41fbbe08f270a8edef99dc369faf809d1bd6
(dm kcopyd: preallocate sub jobs to avoid deadlock)

Reported-by: Michael Leun <ml@newton.leun.net>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
drivers/md/dm-kcopyd.c