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android_kernel_sony_sdm845/include/linux/mtd
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Repository files (latest commit first)
Filename Latest commit message Latest commit date
Alexey Korolev 3d45955962 [MTD] [NAND] subpage read feature as a way to increase performance. 
This patch enables NAND subpage read functionality.
If upper layer drivers are requesting to read non page aligned data NAND
subpage-read functionality reads the only whose ECC regions which include
requested data when original code reads whole page.
This significantly improves performance in many cases.

Here are some digits :

UBI volume mount time
No subpage reads: 5.75 seconds
Subpage read patch: 2.42 seconds

Open/stat time for files on JFFS2 volume:
No subpage read  0m 5.36s
Subpage read     0m 2.88s

Signed-off-by Alexey Korolev <akorolev@infradead.org>
Acked-by: Artem Bityutskiy <dedekind@infradead.org>
Acked-by: Jörn Engel <joern@logfs.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-07-25 10:49:50 -04:00
..
bbm.h [MTD] OneNAND: Error message printing and bad block scan erros 2007-02-07 12:15:01 +09:00
blktrans.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
cfi.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
cfi_endian.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
compatmac.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
concat.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
doc2000.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
flashchip.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
ftl.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
gen_probe.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
inftl.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
map.h Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6 2008-07-25 10:40:14 -04:00
mtd.h Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6 2008-07-25 10:40:14 -04:00
mtdram.h [MTD] Provide mtdram.h with mtdram_init_device() prototype 2007-11-06 08:40:24 +00:00
nand.h [MTD] [NAND] subpage read feature as a way to increase performance. 2008-07-25 10:49:50 -04:00
nand_ecc.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
ndfc.h [MTD] NAND Fix platform structure and NDFC driver 2006-05-29 15:06:49 +02:00
nftl.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
onenand.h [MTD] [OneNAND] proper onenand_bbt_read_oob() prototype 2008-04-22 15:59:13 +01:00
onenand_regs.h [MTD] [OneNAND] Get correct density from device ID 2008-01-29 17:11:38 +09:00
partitions.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
physmap.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
plat-ram.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
pmc551.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00
super.h [MTD] generalise the handling of MTD-specific superblocks 2007-05-11 12:14:15 +01:00
ubi.h UBI: amend commentaries 2008-07-24 13:32:56 +03:00
xip.h MTD/JFFS2: remove CVS keywords 2008-06-04 17:50:17 +01:00