diff options
| author | Zhihao Cheng <chengzhihao1@huawei.com> | 2022-08-17 11:27:35 +0800 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2022-09-21 18:29:18 +0200 |
| commit | 669d204469c46e91d99da24914130f78277a71d3 (patch) | |
| tree | 89df41eb05bec3b2e152076e2c9069765983fbab /include/dt-bindings/pinctrl/k3.h | |
| parent | e7f35da21f6f8c6a8c7d262dd4e4bd32e3083f79 (diff) | |
| download | linux-669d204469c46e91d99da24914130f78277a71d3.tar.bz2 | |
ubi: fastmap: Add fastmap control support for 'UBI_IOCATT' ioctl
[1] suggests that fastmap is suitable for large flash devices. Module
parameter 'fm_autoconvert' is a coarse grained switch to enable all
ubi devices to generate fastmap, which may turn on fastmap even for
small flash devices.
This patch imports a new field 'disable_fm' in struct 'ubi_attach_req'
to support following situations by ioctl 'UBI_IOCATT'.
[old functions]
A. Disable 'fm_autoconvert': Disbable fastmap for all ubi devices
B. Enable 'fm_autoconvert': Enable fastmap for all ubi devices
[new function]
C. Enable 'fm_autoconvert', set 'disable_fm' for given device: Don't
create new fastmap and do full scan (existed fastmap will be
destroyed) for the given ubi device.
A simple test case in [2].
[1] http://www.linux-mtd.infradead.org/doc/ubi.html#L_fastmap
[2] https://bugzilla.kernel.org/show_bug.cgi?id=216278
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'include/dt-bindings/pinctrl/k3.h')
0 files changed, 0 insertions, 0 deletions