kernel/drivers/s390/block/dasd_ioctl.c, branch linux-4.3.y

s390/dasd: fix camel case

2014-08-01T09:16:18Z

Rename enable_PAV to enable_pav. Signed-off-by: Stefan Haberland Signed-off-by: Martin Schwidefsky

dasd: fix error recovery for alias devices during format

2014-07-22T07:26:23Z

Kernel panic or a hanging device during format if an alias device is set offline or I/O errors occur. Omit the error recovery procedure for alias devices and do retries on the base device with full erp. Signed-off-by: Stefan Haberland Signed-off-by: Martin Schwidefsky

s390/dasd: Fail all requests when DASD_FLAG_ABORTIO is set

2013-07-01T15:31:26Z

Whenever a DASD request encounters a timeout we might need to abort all outstanding requests on this or even other devices. This is especially useful if one wants to fail all devices on one side of a RAID10 configuration, even though only one device exhibited an error. To handle this I've introduced a new device flag DASD_FLAG_ABORTIO. This flag is evaluated in __dasd_process_request_queue() and will invoke blk_abort_request() for all outstanding requests with DASD_CQR_FLAGS_FAILFAST set. This will cause any of these requests to be aborted immediately if the blk_timeout function is activated. The DASD_FLAG_ABORTIO is also evaluated in __dasd_process_request_queue to abort all new request which would have the DASD_CQR_FLAGS_FAILFAST bit set. The flag can be set with the new ioctls 'BIODASDABORTIO' and removed with 'BIODASDALLOWIO'. Signed-off-by: Hannes Reinecke Signed-off-by: Stefan Weinhuber Signed-off-by: Martin Schwidefsky

s390/dasd: improve speed of dasdfmt

2013-04-17T12:07:34Z

Reorganize format IO requests and enable usage of PAV. Signed-off-by: Stefan Haberland Signed-off-by: Martin Schwidefsky

s390: use ccw_device_get_schid

2012-11-23T10:14:28Z

Let the dasd driver and qdio use ccw_device_get_schid and get rid of other similar functions. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390/dasd: fix return value for non-existent ioctls

2012-09-26T13:45:12Z

For non-existent ioctls -ENOTTY should be returned. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390/dasd: fix ioctl return value

2012-08-28T08:08:31Z

For unimplemented ioctls the dasd driver should return -ENOTTY. Reported-by: Wanlong Gao Acked-by: Stefan Weinhuber Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390/comments: unify copyright messages and remove file names

2012-07-20T09:15:04Z

Remove the file name from the comment at top of many files. In most cases the file name was wrong anyway, so it's rather pointless. Also unify the IBM copyright statement. We did have a lot of sightly different statements and wanted to change them one after another whenever a file gets touched. However that never happened. Instead people start to take the old/"wrong" statements to use as a template for new files. So unify all of them in one go. Signed-off-by: Heiko Carstens

compat: fix compile breakage on s390

2012-02-27T15:54:27Z

The new is_compat_task() define for the !COMPAT case in include/linux/compat.h conflicts with a similar define in arch/s390/include/asm/compat.h. This is the minimal patch which fixes the build issues. Signed-off-by: Heiko Carstens Signed-off-by: Linus Torvalds

[S390] drivers/s390/block/dasd_ioctl.c: add missing kfree

2011-08-24T15:15:23Z

Data is only used to temporarily hold information to be copied to the user level, so it should be freed before leaving the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @exists@ local idexpression x; statement S,S1; expression E; identifier fl; expression *ptr != NULL; @@ x = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...kfree(x)...+> } when any when != true x == NULL x->fl ...> ( if (x == NULL) S1 | if (...) { ... when != x when forall ( return \(0\|<+...x...+>\|ptr\); | * return ...; ) } ) // Signed-off-by: Julia Lawall Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky