From: Niu Yawei <yawei.niu@xxxxxxxxx> While creating an echo device, echo_device_alloc() copies the lu_site from MD stack, such kind of copy result in uninitialized mutex and other potential issues. Instead of copying the lu_site, we'd use the lu_site by pointer directly. Signed-off-by: Niu Yawei <yawei.niu@xxxxxxxxx> Signed-off-by: Olaf Faaland <faaland1@xxxxxxxx> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6765 Reviewed-on: http://review.whamcloud.com/15657 Reviewed-by: Bobi Jam <bobijam@xxxxxxxxxxx> Reviewed-by: Lai Siyao <lai.siyao@xxxxxxxxx> Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> Signed-off-by: James Simmons <jsimmons@xxxxxxxxxxxxx> --- .../staging/lustre/lustre/obdecho/echo_client.c | 20 +++++++++++--------- 1 files changed, 11 insertions(+), 9 deletions(-) diff --git a/drivers/staging/lustre/lustre/obdecho/echo_client.c b/drivers/staging/lustre/lustre/obdecho/echo_client.c index c69588c..30caf5f 100644 --- a/drivers/staging/lustre/lustre/obdecho/echo_client.c +++ b/drivers/staging/lustre/lustre/obdecho/echo_client.c @@ -55,7 +55,7 @@ struct echo_device { struct echo_client_obd *ed_ec; struct cl_site ed_site_myself; - struct cl_site *ed_site; + struct lu_site *ed_site; struct lu_device *ed_next; }; @@ -527,17 +527,19 @@ static int echo_site_init(const struct lu_env *env, struct echo_device *ed) } rc = lu_site_init_finish(&site->cs_lu); - if (rc) + if (rc) { + cl_site_fini(site); return rc; + } - ed->ed_site = site; + ed->ed_site = &site->cs_lu; return 0; } static void echo_site_fini(const struct lu_env *env, struct echo_device *ed) { if (ed->ed_site) { - cl_site_fini(ed->ed_site); + lu_site_fini(ed->ed_site); ed->ed_site = NULL; } } @@ -674,7 +676,7 @@ static void echo_session_key_exit(const struct lu_context *ctx, goto out_cleanup; } - next->ld_site = &ed->ed_site->cs_lu; + next->ld_site = ed->ed_site; rc = next->ld_type->ldt_ops->ldto_device_init(env, next, next->ld_type->ldt_name, NULL); @@ -741,7 +743,7 @@ static void echo_lock_release(const struct lu_env *env, CDEBUG(D_INFO, "echo device:%p is going to be freed, next = %p\n", ed, next); - lu_site_purge(env, &ed->ed_site->cs_lu, -1); + lu_site_purge(env, ed->ed_site, -1); /* check if there are objects still alive. * It shouldn't have any object because lu_site_purge would cleanup @@ -754,7 +756,7 @@ static void echo_lock_release(const struct lu_env *env, spin_unlock(&ec->ec_lock); /* purge again */ - lu_site_purge(env, &ed->ed_site->cs_lu, -1); + lu_site_purge(env, ed->ed_site, -1); CDEBUG(D_INFO, "Waiting for the reference of echo object to be dropped\n"); @@ -766,7 +768,7 @@ static void echo_lock_release(const struct lu_env *env, CERROR("echo_client still has objects at cleanup time, wait for 1 second\n"); set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(cfs_time_seconds(1)); - lu_site_purge(env, &ed->ed_site->cs_lu, -1); + lu_site_purge(env, ed->ed_site, -1); spin_lock(&ec->ec_lock); } spin_unlock(&ec->ec_lock); @@ -780,7 +782,7 @@ static void echo_lock_release(const struct lu_env *env, while (next) next = next->ld_type->ldt_ops->ldto_device_free(env, next); - LASSERT(ed->ed_site == lu2cl_site(d->ld_site)); + LASSERT(ed->ed_site == d->ld_site); echo_site_fini(env, ed); cl_device_fini(&ed->ed_cl); kfree(ed); -- 1.7.1 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
