linux.git/drivers/mtd/ubi/fastmap.c, branch v4.5 Linux kernel source tree UBI: Fastmap: Fix PEB array type 2015-11-06T22:26:50+00:00 Ezequiel García ezequiel@vanguardiasur.com.ar 2015-10-17T17:55:55+00:00 2a130f1aa54c2fb35abfc4d66e0239c80d054210 The PEB array is an array of __be32, so let's fix the scan_pool() prototype accordingly. Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Richard Weinberger <richard@nod.at> 
The PEB array is an array of __be32, so let's fix the
scan_pool() prototype accordingly.

Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Richard Weinberger <richard@nod.at>
UBI: Fastmap: Simplify expression 2015-10-03T18:08:46+00:00 Richard Weinberger richard@nod.at 2015-07-03T08:36:14+00:00 876f9a348779b348f44736254365bb574fea74eb There is no need to compute pnum again. Signed-off-by: Richard Weinberger <richard@nod.at> Acked-by: Brian Norris <computersforpeace@gmail.com> 
There is no need to compute pnum again.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Brian Norris <computersforpeace@gmail.com>
UBI: Remove unnecessary `\' 2015-06-03T07:41:45+00:00 shengyong shengyong1@huawei.com 2015-06-03T01:37:38+00:00 669d3d123395ce00c7a1c4e3ca0254b2f9ec95d0 Signed-off-by: Sheng Yong <shengyong1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at> 
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
UBI: Fastmap: Do not add vol if it already exists 2015-06-02T09:46:14+00:00 shengyong shengyong1@huawei.com 2015-05-26T10:07:09+00:00 e96a8a3bb671ca02370e85993c3f50ee90691b95 During fastmap attaching, check if a volume already exists when adding the volume to volume tree. NOTE that the issue cannot happen, only if the on-flash fastmap data is modified. Signed-off-by: Sheng Yong <shengyong1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at> 
During fastmap attaching, check if a volume already exists when adding
the volume to volume tree. NOTE that the issue cannot happen, only if
the on-flash fastmap data is modified.

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
UBI: Fastmap: Rename variables to make them meaningful 2015-06-02T09:44:20+00:00 shengyong shengyong1@huawei.com 2015-05-26T10:07:07+00:00 f6e951af34c515ffc69f4a557cf62533420c8ce4 s/fmpl1/fmpl s/fmpl2/fmpl_wl Add "WL" to the error message when wrong WL pool magic number is detected. Signed-off-by: Sheng Yong <shengyong1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at> 
s/fmpl1/fmpl
s/fmpl2/fmpl_wl

Add "WL" to the error message when wrong WL pool magic number is detected.

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
UBI: Fastmap: Remove unnecessary `\' 2015-06-02T09:43:52+00:00 shengyong shengyong1@huawei.com 2015-05-26T10:07:06+00:00 a18fd672675f50c1a05f8c6c03b9a34ef4f07cae Signed-off-by: Sheng Yong <shengyong1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at> 
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
UBI: Fastmap: Wire up WL accessor functions 2015-03-26T21:47:35+00:00 Richard Weinberger richard@nod.at 2014-10-28T15:24:27+00:00 c5c3f3cf969e45c53345283fce0ba11fae7abd32 Use the new WL accessor functions in fastmap. Signed-off-by: Richard Weinberger <richard@nod.at> 
Use the new WL accessor functions in fastmap.

Signed-off-by: Richard Weinberger <richard@nod.at>
UBI: Fastmap: Add self check to detect absent PEBs 2015-03-26T21:46:05+00:00 Richard Weinberger richard@nod.at 2014-09-22T13:36:40+00:00 daef3dd1f0ae71bf04a32af4ef643baf040bb73d This self check allows Fastmap to detect absent PEBs while writing a new fastmap to the MTD device. It will help to find implementation issues in Fastmap. Signed-off-by: Richard Weinberger <richard@nod.at> 
This self check allows Fastmap to detect absent PEBs while
writing a new fastmap to the MTD device.
It will help to find implementation issues in Fastmap.

Signed-off-by: Richard Weinberger <richard@nod.at>
UBI: Fastmap: Rework fastmap error paths 2015-03-26T21:46:03+00:00 Richard Weinberger richard@nod.at 2014-11-10T15:11:40+00:00 5ca97ad83800938e8aeea622821a26d69d2052bf If UBI is unable to write the fastmap to the device we have make sure that upon next attach UBI will fall back to scanning mode. In case we cannot ensure that they only thing we can do is falling back to read-only mode. The current error handling code is not powercut proof. It could happen that a powercut while invalidating would lead to a state where an too old fastmap could be used upon attach. This patch addresses the issue by writing a fake fastmap super block to a fresh PEB instead of reerasing the existing one. The fake fastmap super block will UBI case to do a full scan. Signed-off-by: Richard Weinberger <richard@nod.at> 
If UBI is unable to write the fastmap to the device
we have make sure that upon next attach UBI will fall
back to scanning mode.
In case we cannot ensure that they only thing we can do
is falling back to read-only mode.

The current error handling code is not powercut proof.
It could happen that a powercut while invalidating would
lead to a state where an too old fastmap could be used upon
attach.
This patch addresses the issue by writing a fake fastmap
super block to a fresh PEB instead of reerasing the existing one.
The fake fastmap super block will UBI case to do a full scan.

Signed-off-by: Richard Weinberger <richard@nod.at>
UBI: Fastmap: Prepare for variable sized fastmaps 2015-03-26T21:46:02+00:00 Richard Weinberger richard@nod.at 2014-10-29T15:59:32+00:00 61de74ce2fa2cc9eee85cf5edc6525b12831b507 The current code assumes that each fastmap has the same amount of PEBs. So far this is true but will change soon. Signed-off-by: Richard Weinberger <richard@nod.at> 
The current code assumes that each fastmap has the same amount of PEBs.
So far this is true but will change soon.

Signed-off-by: Richard Weinberger <richard@nod.at>