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| author | Zhihao Cheng <chengzhihao1@huawei.com> | 2023-11-13 17:48:11 +0800 |
|---|---|---|
| committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2023-11-20 07:43:30 +0100 |
| commit | b4b45994a9ba02d575625e3b1076c337be7d4861 (patch) | |
| tree | bf7c3baa93f77236d33b4369523583af911fd7dc /include/mtd/ubi-user.h | |
| parent | 71edfe3b5a51ea9a7fac9760804db328ea1ec8a0 (diff) | |
ubiattach: introduce disable_fm in UBI_IOCATT
The ioctl UBI_IOCATT has been extended with disable_fm parameter after
[1].
This parameter is used for disabling fastmap for target ubi device.
If 'disable_fm' is set, ubi doesn't create new fastmap even the module
param 'fm_autoconvert' is set, and existed old fastmap will be destroyed
after attaching process.
A simple test case in [2].
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=669d204469c46e91d99da24914130f78277a71d3
[2] https://bugzilla.kernel.org/show_bug.cgi?id=216278
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'include/mtd/ubi-user.h')
| -rw-r--r-- | include/mtd/ubi-user.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h index 707c4f2..a389693 100644 --- a/include/mtd/ubi-user.h +++ b/include/mtd/ubi-user.h @@ -235,6 +235,7 @@ enum { * @mtd_num: MTD device number to attach * @vid_hdr_offset: VID header offset (use defaults if %0) * @max_beb_per1024: maximum expected number of bad PEB per 1024 PEBs + * @disable_fm: whether disable fastmap * @padding: reserved for future, not used, has to be zeroed * * This data structure is used to specify MTD device UBI has to attach and the @@ -270,13 +271,18 @@ enum { * eraseblocks for new bad eraseblocks, but attempts to use available * eraseblocks (if any). The accepted range is 0-768. If 0 is given, the * default kernel value of %CONFIG_MTD_UBI_BEB_LIMIT will be used. + * + * If @disable_fm is not zero, ubi doesn't create new fastmap even the module + * param 'fm_autoconvert' is set, and existed old fastmap will be destroyed + * after doing full scanning. */ struct ubi_attach_req { int32_t ubi_num; int32_t mtd_num; int32_t vid_hdr_offset; int16_t max_beb_per1024; - int8_t padding[10]; + int8_t disable_fm; + int8_t padding[9]; }; /* |