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Message-Id: <1461795667-29035-2-git-send-email-jsimmons@infradead.org>
Date: Wed, 27 Apr 2016 18:20:53 -0400
From: James Simmons <jsimmons@...radead.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
devel@...verdev.osuosl.org,
Andreas Dilger <andreas.dilger@...el.com>,
Oleg Drokin <oleg.drokin@...el.com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Lustre Development List <lustre-devel@...ts.lustre.org>,
Jinshan Xiong <jinshan.xiong@...el.com>,
James Simmons <jsimmons@...radead.org>
Subject: [PATCH 01/15] staging: lustre: llite: reset writeback index in ll_writepages
From: Jinshan Xiong <jinshan.xiong@...el.com>
Otherwise after one round the writeback index will become beyond
the file size and ->writepages() turns into an empty operation.
Also, a safety guard is added to limit the wait time for grant to
10 minutes(take recovery into consideration) at maximum in the
osc_enter_cache() function. Otherwise, EDQUOT will be returned to
the applications to start sync write.
Signed-off-by: Jinshan Xiong <jinshan.xiong@...el.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3416
Reviewed-on: http://review.whamcloud.com/6554
Reviewed-by: Bobi Jam <bobijam@...il.com>
Reviewed-by: Niu Yawei <yawei.niu@...el.com>
Reviewed-by: Oleg Drokin <oleg.drokin@...el.com>
Signed-off-by: James Simmons <jsimmons@...radead.org>
---
drivers/staging/lustre/lustre/llite/rw.c | 5 ++-
drivers/staging/lustre/lustre/osc/osc_cache.c | 32 +++++++++++++++++-------
2 files changed, 25 insertions(+), 12 deletions(-)
diff --git a/drivers/staging/lustre/lustre/llite/rw.c b/drivers/staging/lustre/lustre/llite/rw.c
index 4ddf8b3..3363977 100644
--- a/drivers/staging/lustre/lustre/llite/rw.c
+++ b/drivers/staging/lustre/lustre/llite/rw.c
@@ -1105,8 +1105,9 @@ int ll_writepages(struct address_space *mapping, struct writeback_control *wbc)
if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) {
if (end == OBD_OBJECT_EOF)
- end = i_size_read(inode);
- mapping->writeback_index = (end >> PAGE_SHIFT) + 1;
+ mapping->writeback_index = 0;
+ else
+ mapping->writeback_index = (end >> PAGE_SHIFT) + 1;
}
return result;
}
diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c
index 43d8bcc..dccd309 100644
--- a/drivers/staging/lustre/lustre/osc/osc_cache.c
+++ b/drivers/staging/lustre/lustre/osc/osc_cache.c
@@ -1383,15 +1383,19 @@ static int osc_completion(const struct lu_env *env, struct osc_async_page *oap,
return 0;
}
-#define OSC_DUMP_GRANT(cli, fmt, args...) do { \
+#define OSC_DUMP_GRANT(lvl, cli, fmt, args...) do { \
struct client_obd *__tmp = (cli); \
- CDEBUG(D_CACHE, "%s: { dirty: %ld/%ld dirty_pages: %d/%d " \
- "dropped: %ld avail: %ld, reserved: %ld, flight: %d } " fmt, \
+ CDEBUG(lvl, "%s: grant { dirty: %ld/%ld dirty_pages: %d/%d " \
+ "dropped: %ld avail: %ld, reserved: %ld, flight: %d } " \
+ "lru {in list: %d, left: %d, waiters: %d }" fmt, \
__tmp->cl_import->imp_obd->obd_name, \
__tmp->cl_dirty, __tmp->cl_dirty_max, \
atomic_read(&obd_dirty_pages), obd_max_dirty_pages, \
__tmp->cl_lost_grant, __tmp->cl_avail_grant, \
- __tmp->cl_reserved_grant, __tmp->cl_w_in_flight, ##args); \
+ __tmp->cl_reserved_grant, __tmp->cl_w_in_flight, \
+ atomic_read(&__tmp->cl_lru_in_list), \
+ atomic_read(&__tmp->cl_lru_busy), \
+ atomic_read(&__tmp->cl_lru_shrinkers), ##args); \
} while (0)
/* caller must hold loi_list_lock */
@@ -1531,7 +1535,7 @@ static int osc_enter_cache_try(struct client_obd *cli,
{
int rc;
- OSC_DUMP_GRANT(cli, "need:%d.\n", bytes);
+ OSC_DUMP_GRANT(D_CACHE, cli, "need:%d.\n", bytes);
rc = osc_reserve_grant(cli, bytes);
if (rc < 0)
@@ -1576,10 +1580,11 @@ static int osc_enter_cache(const struct lu_env *env, struct client_obd *cli,
struct osc_object *osc = oap->oap_obj;
struct lov_oinfo *loi = osc->oo_oinfo;
struct osc_cache_waiter ocw;
- struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
+ struct l_wait_info lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(600), NULL,
+ LWI_ON_SIGNAL_NOOP, NULL);
int rc = -EDQUOT;
- OSC_DUMP_GRANT(cli, "need:%d.\n", bytes);
+ OSC_DUMP_GRANT(D_CACHE, cli, "need:%d.\n", bytes);
spin_lock(&cli->cl_loi_list_lock);
@@ -1623,8 +1628,15 @@ static int osc_enter_cache(const struct lu_env *env, struct client_obd *cli,
spin_lock(&cli->cl_loi_list_lock);
- /* l_wait_event is interrupted by signal */
+ /* l_wait_event is interrupted by signal, or timed out */
if (rc < 0) {
+ if (rc == -ETIMEDOUT) {
+ OSC_DUMP_GRANT(D_ERROR, cli,
+ "try to reserve %d.\n", bytes);
+ osc_extent_tree_dump(D_ERROR, osc);
+ rc = -EDQUOT;
+ }
+
list_del_init(&ocw.ocw_entry);
goto out;
}
@@ -1641,7 +1653,7 @@ static int osc_enter_cache(const struct lu_env *env, struct client_obd *cli,
}
out:
spin_unlock(&cli->cl_loi_list_lock);
- OSC_DUMP_GRANT(cli, "returned %d.\n", rc);
+ OSC_DUMP_GRANT(D_CACHE, cli, "returned %d.\n", rc);
return rc;
}
@@ -3014,7 +3026,7 @@ int osc_cache_writeback_range(const struct lu_env *env, struct osc_object *obj,
result = rc;
}
- OSC_IO_DEBUG(obj, "cache page out.\n");
+ OSC_IO_DEBUG(obj, "pageout [%lu, %lu], %d.\n", start, end, result);
return result;
}
--
1.7.1
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