[PATCH] bcache: io.c: Fix check against error_limit in case of io errors

From: Pavel Vazharov
Date: Fri Jan 12 2018 - 09:08:02 EST


The actual sysfs io_error_limit value is left shifted IO_ERROR_SHIFT
times before it is stored in the error_limit.
This fixes the un-registering of the cache set when the io_errors reach
the error_limit value.

Signed-off-by: Pavel Vazharov <freakpv@xxxxxxxxx>
---
drivers/md/bcache/io.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c
index fac97ec..1ef6ae2 100644
--- a/drivers/md/bcache/io.c
+++ b/drivers/md/bcache/io.c
@@ -93,7 +93,7 @@ void bch_count_io_errors(struct cache *ca, blk_status_t error, const char *m)
&ca->io_errors);
errors >>= IO_ERROR_SHIFT;

- if (errors < ca->set->error_limit)
+ if (errors < (ca->set->error_limit >> IO_ERROR_SHIFT))
pr_err("%s: IO error on %s, recovering",
bdevname(ca->bdev, buf), m);
else
--
2.7.4