md/raid10: fix failure when trying to repair a read error.

commit 58c54fcca3
     md/raid10: handle further errors during fix_read_error better.

in 3.1 added "r10_sync_page_io" which takes an IO size in sectors.
But we were passing the IO size in bytes!!!
This resulting in bio_add_page failing, and empty request being sent
down, and a consequent BUG_ON in scsi_lib.

[fix missing space in error message at same time]

This fix is suitable for 3.1.y and later.

Cc: stable@vger.kernel.org
Reported-by: Christian Balzer <chibi@gol.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2012-07-03 15:55:33 +10:00
parent 5f066c632f
commit 055d3747db

View File

@ -2310,7 +2310,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
if (r10_sync_page_io(rdev,
r10_bio->devs[sl].addr +
sect,
s<<9, conf->tmppage, WRITE)
s, conf->tmppage, WRITE)
== 0) {
/* Well, this device is dead */
printk(KERN_NOTICE
@ -2349,7 +2349,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
switch (r10_sync_page_io(rdev,
r10_bio->devs[sl].addr +
sect,
s<<9, conf->tmppage,
s, conf->tmppage,
READ)) {
case 0:
/* Well, this device is dead */