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authorMatti Linnanvuori <mattilinnanvuori@yahoo.com>2007-11-05 15:42:26 -0500
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-11-05 15:42:26 -0500
commit127ba2896512699338d997418d7cf5064720b55b (patch)
tree8aa76a18dbc18c0d8f66d4b192ba81077b8950b1 /drivers/ide/Kconfig
parent699b052ad2996c4ca87aa4b9d4a51dcca0f9e588 (diff)
ide/Kconfig: add IDEDISK_MULTI_MODE text adapted from hdparm manual page
Add IDEDISK_MULTI_MODE text adapted from hdparm manual page. Signed-off-by: Matti Linnanvuori <mattilinnanvuori@yahoo.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/Kconfig')
-rw-r--r--drivers/ide/Kconfig19
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 6eaece96524..e2c21699603 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -152,9 +152,22 @@ config BLK_DEV_IDEDISK
152 If unsure, say Y. 152 If unsure, say Y.
153 153
154config IDEDISK_MULTI_MODE 154config IDEDISK_MULTI_MODE
155 bool "Use multi-mode by default" 155 bool "Use multiple sector mode for Programmed Input/Output by default"
156 help 156 help
157 If you get this error, try to say Y here: 157 This setting is irrelevant for most IDE disks, with direct memory
158 access, to which multiple sector mode does not apply. Multiple sector
159 mode is a feature of most modern IDE hard drives, permitting the
160 transfer of multiple sectors per Programmed Input/Output interrupt,
161 rather than the usual one sector per interrupt. When this feature is
162 enabled, it can reduce operating system overhead for disk Programmed
163 Input/Output. On some systems, it also can increase the data
164 throughput of Programmed Input/Output. Some drives, however, seemed
165 to run slower with multiple sector mode enabled. Some drives claimed
166 to support multiple sector mode, but lost data at some settings.
167 Under rare circumstances, such failures could result in massive
168 filesystem corruption.
169
170 If you get the following error, try to say Y here:
158 171
159 hda: set_multmode: status=0x51 { DriveReady SeekComplete Error } 172 hda: set_multmode: status=0x51 { DriveReady SeekComplete Error }
160 hda: set_multmode: error=0x04 { DriveStatusError } 173 hda: set_multmode: error=0x04 { DriveStatusError }