user/sven/linux.git/include/linux/mtd/ubi.h, branch v3.3.5

UBI: clarify the volume notification types' doc

2011-06-23T14:40:07Z

I realized the new descriptions of ADDED and REMOVED could also be misleading: they can also be triggered after using a userland util (ubi{mk,rm}vol). Artem: amend the commentaries Signed-off-by David Wagner Signed-off-by: Artem Bityutskiy

UBI: fix minor stylistic issues

2011-04-14T08:34:41Z

Fix checkpatch.pl errors and warnings: * space before tab * line over 80 characters * include linux/ioctl.h instead of asm/ioctl.h Signed-off-by: Artem Bityutskiy

UBI: provide LEB offset information

2011-03-08T08:12:48Z

Provide the LEB offset information in the UBI device information data structure. This piece of information is required by UBIFS to find out what are the LEB offsets which are aligned to the max. write size. If LEB offset not aligned to max. write size, then UBIFS has to take this into account to write more optimally. Signed-off-by: Artem Bityutskiy

UBI: incorporate maximum write size

2011-03-08T08:12:48Z

Incorporate MTD write buffer size into UBI device information because UBIFS needs this field. UBI does not use it ATM, just provides to upper layers in 'struct ubi_device_info'. Signed-off-by: Artem Bityutskiy

UBI: Add ubi_open_volume_path

2009-11-24T06:18:54Z

Add an 'ubi_open_volume_path(path, mode)' function which works like 'open_bdev_exclusive(path, mode, ...)' where path is the special file representing the UBI volume, typically /dev/ubi0_0. This is needed to teach UBIFS being able to mount UBI character devices. [Comments and the patch were amended a bit by Artem] Signed-off-by: Corentin Chary Signed-off-by: Artem Bityutskiy

UBI: add notification API

2009-06-02T10:53:35Z

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: amend commentaries

2008-07-24T10:32:56Z

Hch asked not to use "unit" for sub-systems, let it be so. Also some other commentaries modifications. Signed-off-by: Artem Bityutskiy

UBI: add ubi_sync() interface

2008-07-24T10:32:56Z

To flush MTD device caches. Signed-off-by: Artem Bityutskiy

UBI: introduce atomic LEB change ioctl

2008-01-25T14:41:25Z

We have to be able to change individual LEBs for utilities like ubifsck, ubifstune. For example, ubifsck has to be able to fix errors on the media, ubifstune has to be able to change the the superblock, hence this ioctl. Signed-off-by: Artem Bityutskiy

UBI: add ubi_leb_map interface

2007-12-26T17:15:14Z

The idea of this interface belongs to Adrian Hunter. The interface is extremely useful when one has to have a guarantee that an LEB will contain all 0xFFs even in case of an unclean reboot. UBI does have an 'ubi_leb_erase()' call which may do this, but it is stupid and ineffecient, because it flushes whole queue. I should be re-worked to just be a pair of unmap, map calls. The user of the interfaci is UBIFS at the moment. Signed-off-by: Artem Bityutskiy