It is possible that multiple I/O requests hits on failed cache device or
backing device, therefore it is quite common that CACHE_SET_IO_DISABLE is
set already when a task tries to set the bit from bch_cached_dev_error()
or bch_cache_set_error(). Currently the message "CACHE_SET_IO_DISABLE
already set" is printed by pr_warn(), which might mislead users to think
a serious fault happens in source code.
This patch uses pr_info() to print the information in such situations,
avoid extra worries. This information is helpful to understand bcache
behavior in cache device failures, so I still keep them in source code.
Fixes: a705642fd4ded ("bcache: set CACHE_SET_IO_DISABLE in bch_cached_dev_error()")
Fixes: 771f393e8ffc9 ("bcache: add CACHE_SET_IO_DISABLE to struct cache_set flags")
Signed-off-by: Coly Li <colyli@xxxxxxx>
---
drivers/md/bcache/super.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 487eb68b598f..158064e5a861 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -1393,7 +1393,7 @@ bool bch_cached_dev_error(struct cached_dev *dc)
*/
c = dc->disk.c;
if (c && test_and_set_bit(CACHE_SET_IO_DISABLE, &c->flags))
- pr_warn("CACHE_SET_IO_DISABLE already set");
+ pr_info("CACHE_SET_IO_DISABLE already set");
bcache_device_stop(&dc->disk);
return true;
@@ -1411,7 +1411,7 @@ bool bch_cache_set_error(struct cache_set *c, const char *fmt, ...)
return false;
if (test_and_set_bit(CACHE_SET_IO_DISABLE, &c->flags))
- pr_warn("CACHE_SET_IO_DISABLE already set");
+ pr_info("CACHE_SET_IO_DISABLE already set");
/* XXX: we can be called from atomic context
acquire_console_sem();
--
2.16.2
