linux.git/drivers/mtd/ubi/cdev.c, branch v2.6.26-rc7

UBI: implement atomic LEB change ioctl

2008-01-25T14:41:26+00:00

Signed-off-by: Artem Bityutskiy

UBI: simplify internal interfaces

2008-01-25T14:41:25+00:00

Instead of passing vol_id to all functions and then find
struct ubi_volume, pass struct ubi_volume pointer.

Signed-off-by: Artem Bityutskiy

UBI: do not change file pointer while updating

2008-01-25T14:41:25+00:00

Since we do not change semantics of seek(), changing the file
pointer while updating does not make much sense.

Signed-off-by: Artem Bityutskiy

UBI: fix warnings

2008-01-25T14:41:24+00:00

drivers/mtd/ubi/cdev.c: In function ‘vol_cdev_read’:
drivers/mtd/ubi/cdev.c:187: warning: unused variable ‘vol_id’
CC [M]  drivers/mtd/ubi/kapi.o
drivers/mtd/ubi/kapi.c: In function ‘ubi_leb_erase’:
drivers/mtd/ubi/kapi.c:483: warning: unused variable ‘vol_id’
drivers/mtd/ubi/kapi.c: In function ‘ubi_leb_unmap’:
drivers/mtd/ubi/kapi.c:544: warning: unused variable ‘vol_id’
drivers/mtd/ubi/kapi.c: In function ‘ubi_leb_map’:
drivers/mtd/ubi/kapi.c:582: warning: unused variable ‘vol_id’

Signed-off-by: Artem Bityutskiy

UBI: handle attach ioctl

2007-12-26T17:15:17+00:00

Actually implement the MTD device attach/detach handlers.

Signed-off-by: Artem Bityutskiy

UBI: add UBI devices reference counting

2007-12-26T17:15:17+00:00

This is one more step on the way to "removable" UBI devices. It
adds reference counting for UBI devices. Every time a volume on
this device is opened - the device's refcount is increased. It
is also increased if someone is reading any sysfs file of this
UBI device or of one of its volumes.

Signed-off-by: Artem Bityutskiy

UBI: add UBI control device

2007-12-26T17:15:17+00:00

This patch is a preparation to make UBI devices dynamic. It
adds an UBI control device which has dynamically allocated
major number and registers itself as "ubi_ctrl". It does not
do anything so far. The idea is that this device will allow
to attach/detach MTD devices from userspace.

This is symilar to what the Linux device mapper has.

The next things to do are:
* Fix UBI, because it now assumes UBI devices cannot go away
* Implement control device ioctls which will attach/detach MTD
  devices

Signed-off-by: Artem Bityutskiy

UBI: tweak volumes locking some more

2007-12-26T17:15:16+00:00

Make the code more consistent by requiring the caller to lock the
ubi->volume_mutex, because this is what we do for updates.

Signed-off-by: Artem Bityutskiy

UBI: get device when opening volume

2007-12-26T17:15:15+00:00

When a volume is opened, get its kref via get_device() call.
And put the reference when closing the volume. With this, we
may have a bit saner volume delete.

Signed-off-by: Artem Bityutskiy

UBI: improve internal interfaces

2007-12-26T17:15:15+00:00

Pass volume description object to the EBA function which makes
more sense, and EBA function do not have to find the volume
description object by volume ID.

Signed-off-by: Artem Bityutskiy