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authorHitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>2015-07-18 01:44:24 +0900
committerJeff Cody <jcody@redhat.com>2015-07-28 00:16:57 -0400
commit6a55c82cece217ab99ed95a412fa7ddf5d5f257b (patch)
tree8869b66bc648c170c22adb1323bb7fe31b7d5697 /block/ssh.c
parentf8787f8723eaca1be99e3b1873e54de163fffa93 (diff)
sheepdog: serialize requests to overwrapping area
Current sheepdog driver only serializes create requests in oid unit. This mechanism isn't enough for handling requests to overwrapping area spanning multiple oids, so it can result bugs like below: https://bugs.launchpad.net/sheepdog-project/+bug/1456421 This patch adds a new serialization mechanism for the problem. The difference from the old one is: 1. serialize entire aiocb if their targetting areas overwrap 2. serialize all requests (read, write, and discard), not only creates This patch also removes the old mechanism because the new one can be an alternative. Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Teruaki Ishizaki <ishizaki.teruaki@lab.ntt.co.jp> Cc: Vasiliy Tolstov <v.tolstov@selfip.ru> Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp> Tested-by: Vasiliy Tolstov <v.tolstov@selfip.ru> Signed-off-by: Jeff Cody <jcody@redhat.com>
Diffstat (limited to 'block/ssh.c')
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