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| author | Quentin Schulz <quentin.schulz@bootlin.com> | 2018-07-02 11:43:50 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2018-08-15 00:25:20 +0200 |
| commit | 62652517753f3cdddce10935139cfa6e00f8da33 (patch) | |
| tree | b0c59fcc4883e94a9f7dd6a68838e28d6bae827c /drivers/mtd/ubi/vtbl.c | |
| parent | ubifs: Use kmalloc_array() (diff) | |
| download | linux-62652517753f3cdddce10935139cfa6e00f8da33.tar.xz linux-62652517753f3cdddce10935139cfa6e00f8da33.zip | |
ubi: provide a way to skip CRC checks
Some users of static UBI volumes implement their own integrity check,
thus making the volume CRC check done at open time useless. For
instance, this is the case when one use the ubiblock + dm-verity +
squashfs combination, where dm-verity already checks integrity of the
block device but this time at the block granularity instead of verifying
the whole volume.
Skipping this test drastically improves the boot-time.
Suggested-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'drivers/mtd/ubi/vtbl.c')
| -rw-r--r-- | drivers/mtd/ubi/vtbl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c index 7504f430c011..1bc82154bb18 100644 --- a/drivers/mtd/ubi/vtbl.c +++ b/drivers/mtd/ubi/vtbl.c @@ -560,6 +560,9 @@ static int init_volumes(struct ubi_device *ubi, vol->name[vol->name_len] = '\0'; vol->vol_id = i; + if (vtbl[i].flags & UBI_VTBL_SKIP_CRC_CHECK_FLG) + vol->skip_check = 1; + if (vtbl[i].flags & UBI_VTBL_AUTORESIZE_FLG) { /* Auto re-size flag may be set only for one volume */ if (ubi->autoresize_vol_id != -1) { |