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
..
ABI	USB: gadget: storage: optional SCSI WRITE FUA bit	2010-08-10 14:35:42 -07:00
accounting
acpi	ACPI, APEI, EINJ injection parameters support	2010-05-19 22:42:08 -04:00
aoe	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
arm	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
auxdisplay
blackfin	Blackfin: document SPI CS limitations with CPHA=0	2010-08-06 12:55:52 -04:00
block	nick piggin: change email address	2010-08-05 08:45:20 -07:00
blockdev	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
cdrom	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
cgroups	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
connector	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
console
cpu-freq
cpuidle
cris
crypto
development-process	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
device-mapper	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
DocBook	kfifo: replace the old non generic API	2010-08-11 08:59:23 -07:00
driver-model
dvb	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-08-04 15:31:02 -07:00
early-userspace
fault-injection	lkdtm: add debugfs access and loosen KPROBE ties	2010-03-06 11:26:32 -08:00
fb	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
filesystems	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus	2010-08-11 09:20:13 -07:00
firmware_class	firmware: Update hotplug script	2010-08-05 13:53:34 -07:00
frv
hwmon	hwmon: f71882fg: add support for the Fintek F71808E	2010-08-09 20:45:10 -07:00
i2c	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
i2o
ia64	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
ide
infiniband	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
input	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-08-04 15:31:02 -07:00
ioctl	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
isdn	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-08-04 15:31:02 -07:00
ja_JP	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
kbuild	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
kdump
ko_KR	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
kvm	KVM: Document KVM_GET_SUPPORTED_CPUID2 ioctl	2010-08-02 06:40:50 +03:00
laptops	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-08-04 15:31:02 -07:00
lguest	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
m68k
make
mips
misc-devices	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
mmc	mmc: add erase, secure erase, trim and secure trim operations	2010-08-12 08:43:30 -07:00
mn10300
mtd	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
namespaces
netlabel	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
networking	Documentation/networking/wavelan.txt: deleted, not in tree	2010-08-11 08:59:18 -07:00
parisc
PCI	Documentation: pci.txt: fix typo	2010-07-11 22:17:45 +02:00
pcmcia	pcmcia: do not use io_req_t when calling pcmcia_request_io()	2010-08-03 09:04:11 +02:00
power	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
powerpc	dts: add sdhci,auto-cmd12 field for p4080 device tree	2010-08-11 08:59:05 -07:00
pps
prctl
RCU	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
s390	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
scheduler	sched: Remove USER_SCHED from documentation	2010-04-02 20:12:01 +02:00
scsi	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-08-04 15:31:02 -07:00
serial	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
sh
sound	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
sparc
spi	spi/ep93xx: implemented driver for Cirrus EP93xx SPI controller	2010-05-25 00:23:16 -06:00
sysctl	oom: enable oom tasklist dump by default	2010-08-09 20:44:56 -07:00
telephony	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
thermal
timers	Documentation: Add timers/timers-howto.txt	2010-08-04 11:00:45 +02:00
trace	vmscan: tracing: add a postprocessing script for reclaim-related ftrace events	2010-08-09 20:45:00 -07:00
uml	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
usb	USB: gadget: g_multi: added documentation and INF files	2010-08-10 14:35:37 -07:00
video4linux	V4L/DVB: Documentation: add v4l2-controls.txt documenting the new controls API	2010-08-08 23:43:04 -03:00
vm	Documentation/vm: fix spelling in page-types.c	2010-08-05 13:21:23 -07:00
w1	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
watchdog	watchdog: docs: add an entry for imx2_wdt	2010-07-01 16:02:55 +00:00
wimax
x86	x86, olpc: Add support for calling into OpenFirmware	2010-06-18 14:54:36 -07:00
zh_CN	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
.gitignore	add random binaries to .gitignore	2010-04-08 11:34:34 +02:00
00-INDEX	mmc: add erase, secure erase, trim and secure trim operations	2010-08-12 08:43:30 -07:00
apparmor.txt	AppArmor: update Maintainer and Documentation	2010-08-02 15:35:15 +10:00
applying-patches.txt
atomic_ops.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt	documentation: fix almost duplicate filenames (IO/io-mapping.txt)	2010-07-20 17:49:30 +00:00
cachetlb.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
Changes	Documentation update broken web addresses	2010-07-11 21:55:42 +02:00
circular-buffers.txt	Document Linux's circular buffering capabilities	2010-03-24 16:31:22 -07:00
coccinelle.txt	Documentation: fix ubuntu distro name	2010-06-29 15:27:00 +02:00
CodingStyle
cpu-hotplug.txt
cpu-load.txt
cputopology.txt
credentials.txt	CRED: Fix __task_cred()'s lockdep check and banner comment	2010-07-29 15:16:18 -07:00
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
DMA-API-HOWTO.txt	Documentation: DMA-API-HOWTO.txt: add multiple types of IOMMUs support	2010-08-11 08:59:21 -07:00
DMA-API.txt	dma-mapping: remove dma_is_consistent API	2010-08-11 08:59:21 -07:00
DMA-attributes.txt
DMA-ISA-LPC.txt
dmaengine.txt
dontdiff
dynamic-debug-howto.txt
edac.txt	Documentation/edac.txt: Reflect the sysfs changes at the document	2010-05-10 11:49:30 -03:00
eisa.txt
email-clients.txt	Documentation/email-clients.txt: update gmail information	2010-03-12 15:52:35 -08:00
feature-removal-schedule.txt	dma-mapping: add DMA_xxBIT_MASK to feature-removal-schedule.txt	2010-08-11 08:59:22 -07:00
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gpio.txt	gpiolib: decouple might_sleep_if() from DEBUG	2010-08-11 08:59:08 -07:00
highuid.txt
HOWTO	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
hw_random.txt
init.txt	init/main.c: improve usability in case of init binary failure	2010-03-06 11:26:29 -08:00
initrd.txt
intel_txt.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
Intel-IOMMU.txt
io_ordering.txt
io-mapping.txt
iostats.txt
IPMI.txt	ipmi: add parameter to limit CPU usage in kipmid	2010-03-12 15:52:39 -08:00
IRQ-affinity.txt
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt
kernel-docs.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
kernel-parameters.txt	panic: keep blinking in spite of long spin timer mode	2010-08-11 08:59:22 -07:00
keys-request-key.txt
keys.txt
kmemcheck.txt
kmemleak.txt
kobject.txt	kobject: documentation: Update to refer to kset-example.c.	2010-03-19 07:12:20 -07:00
kprobes.txt	Documentation: Mention that KProbes is supported on MIPS	2010-08-05 13:26:30 +01:00
kref.txt
ldm.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
leds-class.txt
leds-lp3944.txt
local_ops.txt
lockdep-design.txt
lockstat.txt
logo.gif
logo.txt
magic-number.txt
Makefile	Documentation/fs/: split txt and source files	2010-03-12 15:52:35 -08:00
ManagementStyle
mca.txt
md.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
memory-barriers.txt	Document Linux's circular buffering capabilities	2010-03-24 16:31:22 -07:00
memory-hotplug.txt
memory.txt
mono.txt
mutex-design.txt	Rename .text.lock to .text..lock.	2010-03-03 11:26:00 +01:00
nmi_watchdog.txt
nommu-mmap.txt
numastat.txt
oops-tracing.txt	panic: Add taint flag TAINT_FIRMWARE_WORKAROUND ('I')	2010-05-19 08:37:43 +01:00
padata.txt	Documentation/padata.txt: fix typos etc.	2010-08-11 08:59:18 -07:00
parport-lowlevel.txt
parport.txt
pi-futex.txt
pnp.txt
preempt-locking.txt
printk-formats.txt
prio_tree.txt
rbtree.txt
rfkill.txt	Document the rfkill sysfs ABI	2010-03-10 17:09:33 -05:00
robust-futex-ABI.txt
robust-futexes.txt
rt-mutex-design.txt	variable name fix to Documentation/rt-mutex-design.txt	2010-06-05 17:39:09 +02:00
rt-mutex.txt
rtc.txt
SAK.txt
SecurityBugs
SELinux.txt
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
Smack.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
sparse.txt	update email address	2010-07-19 10:56:54 +02:00
spinlocks.txt
stable_api_nonsense.txt
stable_kernel_rules.txt	Documentation: -stable rules: upstream commit ID requirement reworded	2010-04-22 15:24:56 -07:00
SubmitChecklist	Documentation: update SubmitChecklist for O=objdir and kconfig testing	2010-05-24 07:31:20 -07:00
SubmittingDrivers	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
SubmittingPatches	SubmittingPatches: add more about patch descriptions	2010-08-09 20:45:05 -07:00
svga.txt
sysfs-rules.txt	Fix typos in comments	2010-03-16 11:47:56 +01:00
sysrq.txt	Input: Documentation/sysrq.txt - update KEY_SYSRQ info	2010-05-19 10:14:15 -07:00
tomoyo.txt	TOMOYO: Update version to 2.3.0	2010-08-02 15:35:10 +10:00
unaligned-memory-access.txt
unicode.txt
unshare.txt
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
volatile-considered-harmful.txt	Documentation/volatile-considered-harmful.txt: correct cpu_relax() documentation	2010-03-24 16:31:20 -07:00
zorro.txt