linux.git/drivers/mtd/ubi/cdev.c, branch v2.6.31

UBI: remove built-in gluebi

2009-06-02T10:53:35+00:00

Remove built-in gluebi support. This is a preparation for a
standalone glubi module support

Signed-off-by: Dmitry Pervushin 
Signed-off-by: Artem Bityutskiy

UBI: add notification API

2009-06-02T10:53:35+00:00

UBI volume notifications are intended to create the API to get clients
notified about volume creation/deletion, renaming and re-sizing. A
client can subscribe to these notifications using 'ubi_volume_register()'
and cancel the subscription using 'ubi_volume_unregister()'. When UBI
volumes change, a blocking notifier is called. Clients also can request
"added" events on all volumes that existed before client subscribed
to the notifications.

If we use notifications instead of calling functions like 'ubi_gluebi_xxx()',
we can make the MTD emulation layer to be more flexible: build it as a
separate module and load/unload it on demand.

[Artem: many cleanups, rework locking, add "updated" event, provide
 device/volume info in notifiers]

Signed-off-by: Dmitry Pervushin 
Signed-off-by: Artem Bityutskiy

UBI: improve debugging messages

2009-05-18T09:28:25+00:00

Various minor improvements to the debugging messages which
I found useful while hunting problems.

Signed-off-by: Artem Bityutskiy

UBI: re-name volumes_mutex to device_mutex

2009-05-18T09:28:24+00:00

The mutex essencially protects the entire UBI device, so the
old @volumes_mutex name is a little misleading.

Signed-off-by: Artem Bityutskiy

UBI: remove redundant mutex

2009-05-18T09:26:41+00:00

The @mult_mutex does not serve any purpose. We already have
@volumes_mutex and it is enough. The @volume mutex is pushed
down to the 'ubi_rename_volumes()', because we want first
to open all volumes in the exclusive mode, and then lock the
mutex, just like all other ioctl's (remove, re-size, etc) do.

Signed-off-by: Artem Bityutskiy

UBI: add fsync capability

2009-02-20T11:34:06+00:00

Now, we can call fsync() on an UBI volume.

Signed-off-by: Corentin Chary 
Signed-off-by: Artem Bityutskiy

UBI: allow direct user-space I/O

2009-01-27T14:54:41+00:00

Introduce a new ioctl UBI_IOCSETPROP to set properties
on a volume. Also add the first property:
UBI_PROP_DIRECT_WRITE, this property is used to set the
ability to use direct writes in userspace

Signed-off-by: Sidney Amani 
Signed-off-by: Corentin Chary 
Signed-off-by: Artem Bityutskiy

UBI: use nicer 64-bit math

2009-01-18T12:27:44+00:00

Get rid of 'do_div()' and use more user-friendly primitives from
'linux/math64.h'.

Signed-off-by: Artem Bityutskiy

UBI: add ioctl compatibility

2009-01-18T12:27:41+00:00

UBI ioctl's do not work when running 64-bit kernel and 32-bit
user-land. Fix this by adding the compat_ioctl method.

Also, UBI serializes all ioctls, so more than one ioctl at a time
is not a problem. Amd UBI does not seem to depend on anything else,
so use unlocked_ioctl instead of ioctl (no BKL needed).

Reported-by: Geert Uytterhoeven 
Signed-off-by: Artem Bityutskiy 
Reviewed-by: Arnd Bergmann

UBI: constify file operations

2009-01-18T12:02:08+00:00

Signed-off-by: Jan Engelhardt 
Signed-off-by: Artem Bityutskiy