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| author | xuejiufei <xuejiufei@huawei.com> | 2016-03-15 14:53:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-15 16:55:16 -0700 |
| commit | 842b90b62461d0848bd56ad776117d15a5fa95c0 (patch) | |
| tree | a8e5c2248a2fc9f2e77d8624c75f271214715199 /fs/ocfs2/dlm | |
| parent | 60d663cb527340c87c6cb98842e90a43243e1607 (diff) | |
| download | linux-842b90b62461d0848bd56ad776117d15a5fa95c0.tar.gz linux-842b90b62461d0848bd56ad776117d15a5fa95c0.tar.bz2 linux-842b90b62461d0848bd56ad776117d15a5fa95c0.zip | |
ocfs2/dlm: return in progress if master can not clear the refmap bit right now
Master returns in-progress to non-master node when it can not clear the
refmap bit right now. And non-master node will not purge the lock
resource until receiving deref done message.
Signed-off-by: xuejiufei <xuejiufei@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/dlm')
| -rw-r--r-- | fs/ocfs2/dlm/dlmcommon.h | 5 | ||||
| -rw-r--r-- | fs/ocfs2/dlm/dlmmaster.c | 8 | ||||
| -rw-r--r-- | fs/ocfs2/dlm/dlmthread.c | 7 |
3 files changed, 17 insertions, 3 deletions
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h index c9f97da9231a..3b77862fc85d 100644 --- a/fs/ocfs2/dlm/dlmcommon.h +++ b/fs/ocfs2/dlm/dlmcommon.h @@ -783,6 +783,11 @@ struct dlm_deref_lockres u8 name[O2NM_MAX_NAME_LEN]; }; +enum { + DLM_DEREF_RESPONSE_DONE = 0, + DLM_DEREF_RESPONSE_INPROG = 1, +}; + struct dlm_deref_lockres_done { u32 pad1; u16 pad2; diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c index 8913e7d443da..87e22541850e 100644 --- a/fs/ocfs2/dlm/dlmmaster.c +++ b/fs/ocfs2/dlm/dlmmaster.c @@ -2278,7 +2278,7 @@ int dlm_drop_lockres_ref(struct dlm_ctxt *dlm, struct dlm_lock_resource *res) dlm_print_one_lock_resource(res); BUG(); } - return ret; + return ret ? ret : r; } int dlm_deref_lockres_handler(struct o2net_msg *msg, u32 len, void *data, @@ -2345,7 +2345,7 @@ int dlm_deref_lockres_handler(struct o2net_msg *msg, u32 len, void *data, res->lockname.len, res->lockname.name, node); dlm_print_one_lock_resource(res); } - ret = 0; + ret = DLM_DEREF_RESPONSE_DONE; goto done; } @@ -2365,7 +2365,7 @@ int dlm_deref_lockres_handler(struct o2net_msg *msg, u32 len, void *data, spin_unlock(&dlm->work_lock); queue_work(dlm->dlm_worker, &dlm->dispatched_work); - return 0; + return DLM_DEREF_RESPONSE_INPROG; done: if (res) @@ -2511,6 +2511,8 @@ static void dlm_deref_lockres_worker(struct dlm_work_item *item, void *data) } spin_unlock(&res->spinlock); + dlm_drop_lockres_ref_done(dlm, res, node); + if (cleared) { mlog(0, "%s:%.*s node %u ref dropped in dispatch\n", dlm->name, res->lockname.len, res->lockname.name, node); diff --git a/fs/ocfs2/dlm/dlmthread.c b/fs/ocfs2/dlm/dlmthread.c index c5f6c241ecd7..22e6eb8b8d22 100644 --- a/fs/ocfs2/dlm/dlmthread.c +++ b/fs/ocfs2/dlm/dlmthread.c @@ -202,6 +202,13 @@ static void dlm_purge_lockres(struct dlm_ctxt *dlm, dlm->purge_count--; } + if (!master && ret != 0) { + mlog(0, "%s: deref %.*s in progress or master goes down\n", + dlm->name, res->lockname.len, res->lockname.name); + spin_unlock(&res->spinlock); + return; + } + if (!__dlm_lockres_unused(res)) { mlog(ML_ERROR, "%s: res %.*s in use after deref\n", dlm->name, res->lockname.len, res->lockname.name); |