Adrian Hunter
dfe86cba76
mmc: add erase, secure erase, trim and secure trim operations ...
SD/MMC cards tend to support an erase operation. In addition, eMMC v4.4
cards can support secure erase, trim and secure trim operations that are
all variants of the basic erase command.
SD/MMC device attributes "erase_size" and "preferred_erase_size" have been
added.
"erase_size" is the minimum size, in bytes, of an erase operation. For
MMC, "erase_size" is the erase group size reported by the card. Note that
"erase_size" does not apply to trim or secure trim operations where the
minimum size is always one 512 byte sector. For SD, "erase_size" is 512
if the card is block-addressed, 0 otherwise.
SD/MMC cards can erase an arbitrarily large area up to and
including the whole card. When erasing a large area it may
be desirable to do it in smaller chunks for three reasons:
1. A single erase command will make all other I/O on the card
wait. This is not a problem if the whole card is being erased, but
erasing one partition will make I/O for another partition on the
same card wait for the duration of the erase - which could be a
several minutes.
2. To be able to inform the user of erase progress.
3. The erase timeout becomes too large to be very useful.
Because the erase timeout contains a margin which is multiplied by
the size of the erase area, the value can end up being several
minutes for large areas.
"erase_size" is not the most efficient unit to erase (especially for SD
where it is just one sector), hence "preferred_erase_size" provides a good
chunk size for erasing large areas.
For MMC, "preferred_erase_size" is the high-capacity erase size if a card
specifies one, otherwise it is based on the capacity of the card.
For SD, "preferred_erase_size" is the allocation unit size specified by
the card.
"preferred_erase_size" is in bytes.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Cc: Kyungmin Park <kmpark@infradead.org>
Cc: Madhusudhan Chikkature <madhu.cr@ti.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ben Gardiner <bengardiner@nanometrics.ca>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-12 08:43:30 -07:00
USB: gadget: storage: optional SCSI WRITE FUA bit
2010-08-10 14:35:42 -07:00
ACPI, APEI, EINJ injection parameters support
2010-05-19 22:42:08 -04:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Blackfin: document SPI CS limitations with CPHA=0
2010-08-06 12:55:52 -04:00
nick piggin: change email address
2010-08-05 08:45:20 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation/: it's -> its where appropriate
2010-04-23 02:09:52 +02:00
doc: fix console doc typo
2010-02-24 13:51:32 +01:00
[CPUFREQ] Processor Clocking Control interface driver
2010-01-13 10:55:16 -05:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
kfifo: replace the old non generic API
2010-08-11 08:59:23 -07:00
Fix spelling of 'platform' in comments and doc
2010-02-05 12:22:34 +01:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-08-04 15:31:02 -07:00
lkdtm: add debugfs access and loosen KPROBE ties
2010-03-06 11:26:32 -08:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus
2010-08-11 09:20:13 -07:00
firmware: Update hotplug script
2010-08-05 13:53:34 -07:00
hwmon: f71882fg: add support for the Fintek F71808E
2010-08-09 20:45:10 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-08-04 15:31:02 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
2010-08-07 17:09:24 -07:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-08-04 15:31:02 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
2010-08-05 14:12:07 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
KVM: Document KVM_GET_SUPPORTED_CPUID2 ioctl
2010-08-02 06:40:50 +03:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-08-04 15:31:02 -07:00
Documentation/: it's -> its where appropriate
2010-04-23 02:09:52 +02:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
mmc: add erase, secure erase, trim and secure trim operations
2010-08-12 08:43:30 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation/: it's -> its where appropriate
2010-04-23 02:09:52 +02:00
Documentation/networking/wavelan.txt: deleted, not in tree
2010-08-11 08:59:18 -07:00
Documentation: pci.txt: fix typo
2010-07-11 22:17:45 +02:00
pcmcia: do not use io_req_t when calling pcmcia_request_io()
2010-08-03 09:04:11 +02:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
dts: add sdhci,auto-cmd12 field for p4080 device tree
2010-08-11 08:59:05 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
sched: Remove USER_SCHED from documentation
2010-04-02 20:12:01 +02:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-08-04 15:31:02 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
2010-08-07 17:07:31 -07:00
spi/ep93xx: implemented driver for Cirrus EP93xx SPI controller
2010-05-25 00:23:16 -06:00
oom: enable oom tasklist dump by default
2010-08-09 20:44:56 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation: Add timers/timers-howto.txt
2010-08-04 11:00:45 +02:00
vmscan: tracing: add a postprocessing script for reclaim-related ftrace events
2010-08-09 20:45:00 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
USB: gadget: g_multi: added documentation and INF files
2010-08-10 14:35:37 -07:00
V4L/DVB: Documentation: add v4l2-controls.txt documenting the new controls API
2010-08-08 23:43:04 -03:00
Documentation/vm: fix spelling in page-types.c
2010-08-05 13:21:23 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
watchdog: docs: add an entry for imx2_wdt
2010-07-01 16:02:55 +00:00
x86, olpc: Add support for calling into OpenFirmware
2010-06-18 14:54:36 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
add random binaries to .gitignore
2010-04-08 11:34:34 +02:00
mmc: add erase, secure erase, trim and secure trim operations
2010-08-12 08:43:30 -07:00
AppArmor: update Maintainer and Documentation
2010-08-02 15:35:15 +10:00
Documentation/: it's -> its where appropriate
2010-04-23 02:09:52 +02:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
documentation: fix almost duplicate filenames (IO/io-mapping.txt)
2010-07-20 17:49:30 +00:00
Documentation/: it's -> its where appropriate
2010-04-23 02:09:52 +02:00
Documentation update broken web addresses
2010-07-11 21:55:42 +02:00
Document Linux's circular buffering capabilities
2010-03-24 16:31:22 -07:00
Documentation: fix ubuntu distro name
2010-06-29 15:27:00 +02:00
cpumask: don't recommend set_cpus_allowed hack in Documentation/cpu-hotplug.txt
2009-12-17 11:43:29 +10:30
CRED: Fix __task_cred()'s lockdep check and banner comment
2010-07-29 15:16:18 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation: DMA-API-HOWTO.txt: add multiple types of IOMMUs support
2010-08-11 08:59:21 -07:00
dma-mapping: remove dma_is_consistent API
2010-08-11 08:59:21 -07:00
Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig
2010-02-25 14:43:57 -08:00
Documentation/edac.txt: Reflect the sysfs changes at the document
2010-05-10 11:49:30 -03:00
doc: fix Defaultd -> Defaults typo in EISA doc
2010-02-05 12:22:39 +01:00
Documentation/email-clients.txt: update gmail information
2010-03-12 15:52:35 -08:00
dma-mapping: add DMA_xxBIT_MASK to feature-removal-schedule.txt
2010-08-11 08:59:22 -07:00
gpiolib: decouple might_sleep_if() from DEBUG
2010-08-11 08:59:08 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
init/main.c: improve usability in case of init binary failure
2010-03-06 11:26:29 -08:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
ipmi: add parameter to limit CPU usage in kipmid
2010-03-12 15:52:39 -08:00
documentation: update kernel-doc-nano-HOWTO information
2010-01-11 09:34:07 -08:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
panic: keep blinking in spite of long spin timer mode
2010-08-11 08:59:22 -07:00
kobject: documentation: Update to refer to kset-example.c.
2010-03-19 07:12:20 -07:00
Documentation: Mention that KProbes is supported on MIPS
2010-08-05 13:26:30 +01:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Documentation/fs/: split txt and source files
2010-03-12 15:52:35 -08:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Document Linux's circular buffering capabilities
2010-03-24 16:31:22 -07:00
mm: add numa node symlink for memory section in sysfs
2009-12-15 08:53:17 -08:00
Rename .text.lock to .text..lock.
2010-03-03 11:26:00 +01:00
nommu: fix malloc performance by adding uninitialized flag
2009-12-15 08:53:24 -08:00
panic: Add taint flag TAINT_FIRMWARE_WORKAROUND ('I')
2010-05-19 08:37:43 +01:00
Documentation/padata.txt: fix typos etc.
2010-08-11 08:59:18 -07:00
doc: capitalization and other minor fixes in pnp doc
2010-02-05 12:22:44 +01:00
rbtree: Add support for augmented rbtrees
2010-02-18 15:40:56 -08:00
Document the rfkill sysfs ABI
2010-03-10 17:09:33 -05:00
variable name fix to Documentation/rt-mutex-design.txt
2010-06-05 17:39:09 +02:00
Documentation/: it's -> its where appropriate
2010-04-23 02:09:52 +02:00
update email address
2010-07-19 10:56:54 +02:00
Documentation: rw_lock lessons learned
2009-12-14 09:46:56 -08:00
Documentation: -stable rules: upstream commit ID requirement reworded
2010-04-22 15:24:56 -07:00
Documentation: update SubmitChecklist for O=objdir and kconfig testing
2010-05-24 07:31:20 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
SubmittingPatches: add more about patch descriptions
2010-08-09 20:45:05 -07:00
Fix typos in comments
2010-03-16 11:47:56 +01:00
Input: Documentation/sysrq.txt - update KEY_SYSRQ info
2010-05-19 10:14:15 -07:00
TOMOYO: Update version to 2.3.0
2010-08-02 15:35:10 +10:00
vgaarbiter: fix a typo in the vgaarbiter Documentation
2009-12-16 11:28:58 -08:00
Documentation/volatile-considered-harmful.txt: correct cpu_relax() documentation
2010-03-24 16:31:20 -07:00
dfe86cba76
