From: NeilBrown <neilb@suse.com>
To: Oleg Drokin <oleg.drokin@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
James Simmons <jsimmons@infradead.org>,
Andreas Dilger <andreas.dilger@intel.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Lustre Development List <lustre-devel@lists.lustre.org>
Subject: [PATCH 02/17] staging: lustre: fix bug in osc_enter_cache_try
Date: Fri, 02 Mar 2018 10:31:25 +1100 [thread overview]
Message-ID: <151994708510.7628.7308229784516417641.stgit@noble> (raw)
In-Reply-To: <151994679573.7628.1024109499321778846.stgit@noble>
The lustre-release patch commit bdc5bb52c554 ("LU-4933 osc:
Automatically increase the max_dirty_mb") changed
- if (cli->cl_dirty + PAGE_CACHE_SIZE <= cli->cl_dirty_max &&
+ if (cli->cl_dirty_pages < cli->cl_dirty_max_pages &&
When this patch landed in Linux a couple of years later, it landed as
- if (cli->cl_dirty + PAGE_SIZE <= cli->cl_dirty_max &&
+ if (cli->cl_dirty_pages <= cli->cl_dirty_max_pages &&
which is clearly different ('<=' vs '<'), and allows cl_dirty_pages to
increase beyond cl_dirty_max_pages - which causes a latter assertion
to fails.
Fixes: 3147b268400a ("staging: lustre: osc: Automatically increase the max_dirty_mb")
Signed-off-by: NeilBrown <neilb@suse.com>
---
drivers/staging/lustre/lustre/include/obd.h | 2 +-
drivers/staging/lustre/lustre/osc/osc_cache.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/lustre/lustre/include/obd.h b/drivers/staging/lustre/lustre/include/obd.h
index 4368f4e9f208..f1233ca7d337 100644
--- a/drivers/staging/lustre/lustre/include/obd.h
+++ b/drivers/staging/lustre/lustre/include/obd.h
@@ -191,7 +191,7 @@ struct client_obd {
struct sptlrpc_flavor cl_flvr_mgc; /* fixed flavor of mgc->mgs */
/* the grant values are protected by loi_list_lock below */
- unsigned long cl_dirty_pages; /* all _dirty_ in pahges */
+ unsigned long cl_dirty_pages; /* all _dirty_ in pages */
unsigned long cl_dirty_max_pages; /* allowed w/o rpc */
unsigned long cl_dirty_transit; /* dirty synchronous */
unsigned long cl_avail_grant; /* bytes of credit for ost */
diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c
index 1c70a504ee89..459503727ce3 100644
--- a/drivers/staging/lustre/lustre/osc/osc_cache.c
+++ b/drivers/staging/lustre/lustre/osc/osc_cache.c
@@ -1529,7 +1529,7 @@ static int osc_enter_cache_try(struct client_obd *cli,
if (rc < 0)
return 0;
- if (cli->cl_dirty_pages <= cli->cl_dirty_max_pages &&
+ if (cli->cl_dirty_pages < cli->cl_dirty_max_pages &&
atomic_long_read(&obd_dirty_pages) + 1 <= obd_max_dirty_pages) {
osc_consume_write_grant(cli, &oap->oap_brw_page);
if (transient) {
next prev parent reply other threads:[~2018-03-01 23:31 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-01 23:31 [PATCH 00/17] staging: remove requirement that lustre be built as module NeilBrown
2018-03-01 23:31 ` [PATCH 06/17] staging: lustre: get entropy from nid when nid set NeilBrown
2018-03-08 0:19 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 11/17] staging: lustre: ptlrpc: use workqueue for pinger NeilBrown
2018-03-08 23:53 ` Dilger, Andreas
2018-03-11 21:37 ` NeilBrown
2018-03-01 23:31 ` [PATCH 12/17] staging: lustre: remove unused flag from ptlrpc_thread NeilBrown
2018-03-08 23:54 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 01/17] staging: lustre: obd_mount: use correct niduuid suffix NeilBrown
2018-03-07 20:49 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 13/17] staging: lustre: remove 'ptlrpc_thread usage' for sai_agl_thread NeilBrown
2018-03-09 0:12 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 14/17] staging: lustre: change sai_thread to sai_task NeilBrown
2018-03-09 0:20 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 05/17] staging: lustre: lnet: keep ln_nportals consistent NeilBrown
2018-03-07 21:24 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 08/17] staging: lustre: obdclass: use workqueue for zombie management NeilBrown
2018-03-08 0:27 ` Dilger, Andreas
2018-03-01 23:31 ` NeilBrown [this message]
2018-03-07 20:51 ` [PATCH 02/17] staging: lustre: fix bug in osc_enter_cache_try Dilger, Andreas
2018-03-01 23:31 ` [PATCH 03/17] staging: lustre: statahead: remove incorrect test on agl_list_empty() NeilBrown
2018-03-07 21:08 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 10/17] staging: lustre: ptlrpc: use delayed_work in sec_gc NeilBrown
2018-03-08 19:23 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 17/17] Revert "staging: Disable lustre file system for MIPS, SH, and XTENSA" NeilBrown
2018-03-09 0:37 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 15/17] staging: lustre: ptlrpc: move thread creation out of module initialization NeilBrown
2018-03-09 0:31 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 07/17] staging: lustre: ptlrpc: change GFP_NOFS to GFP_KERNEL NeilBrown
2018-03-08 0:20 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 16/17] staging: lustre: allow monolithic builds NeilBrown
2018-03-09 0:32 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 04/17] staging: lustre: obdclass: don't require lct_owner to be non-NULL NeilBrown
2018-03-07 21:10 ` Dilger, Andreas
2018-03-01 23:31 ` [PATCH 09/17] staging: lustre: ldlm: use delayed_work for pools_recalc NeilBrown
2018-03-08 19:22 ` Dilger, Andreas
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