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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-15 07:41:27 +0200 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-15 07:41:27 +0200 |
commit | c362495586e8a3a6487a318fcd82eaf15ffe2142 (patch) | |
tree | 86f7b195d36ba198f24f86be327f21a8d24ec248 /drivers/mtd/ubi/Kconfig | |
parent | tty: serial: sccnxp: Fix bug with unterminated platform_id list (diff) | |
parent | Linux 3.7-rc1 (diff) | |
download | linux-c362495586e8a3a6487a318fcd82eaf15ffe2142.tar.xz linux-c362495586e8a3a6487a318fcd82eaf15ffe2142.zip |
Merge 3.7-rc1 into tty-linus
This syncs up the tty-linus branch to the latest in Linus's tree to get all of
the UAPI stuff needed for the next set of patches to merge.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mtd/ubi/Kconfig')
-rw-r--r-- | drivers/mtd/ubi/Kconfig | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/Kconfig b/drivers/mtd/ubi/Kconfig index 271a842f8c39..36663af56d89 100644 --- a/drivers/mtd/ubi/Kconfig +++ b/drivers/mtd/ubi/Kconfig @@ -56,6 +56,27 @@ config MTD_UBI_BEB_LIMIT Leave the default value if unsure. +config MTD_UBI_FASTMAP + bool "UBI Fastmap (Experimental feature)" + default n + help + Important: this feature is experimental so far and the on-flash + format for fastmap may change in the next kernel versions + + Fastmap is a mechanism which allows attaching an UBI device + in nearly constant time. Instead of scanning the whole MTD device it + only has to locate a checkpoint (called fastmap) on the device. + The on-flash fastmap contains all information needed to attach + the device. Using fastmap makes only sense on large devices where + attaching by scanning takes long. UBI will not automatically install + a fastmap on old images, but you can set the UBI module parameter + fm_autoconvert to 1 if you want so. Please note that fastmap-enabled + images are still usable with UBI implementations without + fastmap support. On typical flash devices the whole fastmap fits + into one PEB. UBI will reserve PEBs to hold two fastmaps. + + If in doubt, say "N". + config MTD_UBI_GLUEBI tristate "MTD devices emulation driver (gluebi)" help |