tree a0b5c1935077c1bf40db1945c5f30e8d8a9a47a2
parent 73d410c0137f63c6597e9763c81e5f4d015e9940
author Milan Broz <mbroz@redhat.com> 1202436627 +0000
committer Alasdair G Kergon <agk@redhat.com> 1202436627 +0000

dm: split dm_suspend io_lock hold into two

Change io_locking to allow processing flush in separate thread.

Because we have DMF_BLOCK_IO already set, any possible
new ios are queued in dm_requests now.

In the case of interrupting previous wait there can be more
ios queued (we unlocked io_lock for a while) but this is safe.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>