[ATA] Increase lba48 max-sectors from 200 to 256. (8b881b04) · Commits · 戴 / test

Also, moved ATA_MAX_SECTORS and ATA_MAX_SECTORS_LBA48 from linux/libata.h to linux/ata.h, now that they truly reflect the standard (well... mostly; note TODO comment). This changes the performance profile (and potential bug profile) for a bunch of drivers, so be wary.

include/linux/ata.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,8 @@ enum {
		ATA_MAX_DEVICES = 2, /* per bus/port */
		ATA_MAX_PRD = 256, /* we could make these 256/256 */
		ATA_SECT_SIZE = 512,
		ATA_MAX_SECTORS = 256,
		ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */

		ATA_ID_WORDS = 256,
		ATA_ID_SERNO_OFS = 10,

include/linux/libata.h

+0 −2

Original line number	Diff line number	Diff line
		@@ -114,8 +114,6 @@ enum {
		/* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
		ATA_MAX_QUEUE = 32,
		ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
		ATA_MAX_SECTORS = 200, /* FIXME */
		ATA_MAX_SECTORS_LBA48 = 65535,
		ATA_MAX_BUS = 2,
		ATA_DEF_BUSY_WAIT = 10000,
		ATA_SHORT_PAUSE = (HZ >> 6) + 1,

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