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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-08 15:40:45 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-08 15:40:45 +0400 |
| commit | e9eca4de957ac33744fb994ccacd4a5102e445a8 (patch) | |
| tree | fc1cf7c808d3daa365a56856321834d030fcf10d /MAINTAINERS | |
| parent | 1929041bd8afeb3995b7c68d6f16e03422848a4c (diff) | |
| parent | 76ac66e469f084d41742ba08923de76fbdc7dce3 (diff) | |
| download | linux-e9eca4de957ac33744fb994ccacd4a5102e445a8.tar.xz | |
Merge tag 'upstream-3.7-rc1-fastmap' of git://git.infradead.org/linux-ubi
Pull UBI fastmap changes from Artem Bityutskiy:
"This pull request contains the UBI fastmap support implemented by
Richard Weinberger from Linutronix. Fastmap is designed to address
UBI's slow scanning issues. Namely, it introduces a new on-flash
data-structure called "fastmap", which stores the information about
logical<->physical eraseblocks mappings. So now to get this
information just read the fastmap, instead of doing full scan. More
information here can be found in Richard's announcement in LKML
(Subject: UBI: Fastmap request for inclusion (v19)):
http://thread.gmane.org/gmane.linux.kernel/1364922/focus=1369109
One thing I want to explicitly say is that fastmap did not have large
enough linux-next exposure. It is partially my fault - I did not
respond quickly enough. I _really_ apologize for this. But it had
good testing and disabled by default, so I do not expect that we'll
break anything.
Fastmap is declared as experimental so far, and it is off by default.
We did declare that the on-flash format may be changed. The reason
for this is that no one used it in real production so far, so there is
a high risk that something is missing. Besides, we do not have
user-space tools supporting fastmap so far.
Nevertheless, I suggest we merge this feature. Many people want UBI's
scanning bottleneck to be fixed and merging fastmap now should
accelerate its production use. The plan is to make it bullet-prove,
somewhat clean-up, and make it the default for UBI. I do not know how
many kernel releases will it take.
Basically, I what I want to do for fastmap is something like Linus did
for btrfs few years ago."
* tag 'upstream-3.7-rc1-fastmap' of git://git.infradead.org/linux-ubi:
UBI: Wire-up fastmap
UBI: Add fastmap core
UBI: Add fastmap support to the WL sub-system
UBI: Add fastmap stuff to attach.c
UBI: Wire-up ->fm_sem
UBI: Add fastmap bits to build.c
UBI: Add self_check_eba()
UBI: Export next_sqnum()
UBI: Add fastmap stuff to ubi.h
UBI: Add fastmap on-flash data structures
Diffstat (limited to 'MAINTAINERS')
| -rw-r--r-- | MAINTAINERS | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 84ee86719bd9..b4e5ecf8d3d2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7457,6 +7457,12 @@ F: drivers/mtd/ubi/ F: include/linux/mtd/ubi.h F: include/mtd/ubi-user.h +UNSORTED BLOCK IMAGES (UBI) Fastmap +M: Richard Weinberger <richard@nod.at> +L: linux-mtd@lists.infradead.org +S: Maintained +F: drivers/mtd/ubi/fastmap.c + USB ACM DRIVER M: Oliver Neukum <oliver@neukum.org> L: linux-usb@vger.kernel.org |