libata: clean up EH speed down implementation
Clean up EH speed down implementation.
* is_io boolean variable is replaced eflags. is_io is ATA_EFLAG_IS_IO.
* Error categories now have names.
* Better comments.
* Reorder 5min and 10min rules in ata_eh_speed_down_verdict()
* Use local variable @link to cache @dev->link in ata_eh_speed_down()
These changes are to improve readability and ease further changes.
This patch doesn't introduce any behavior change.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/include/linux/libata.h b/include/linux/libata.h
index ca347b0..74f1255 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -482,7 +482,7 @@
};
struct ata_ering_entry {
- int is_io;
+ unsigned int eflags;
unsigned int err_mask;
u64 timestamp;
};