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author | Matti Linnanvuori <mattilinnanvuori@yahoo.com> | 2007-11-05 21:42:26 +0100 |
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committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-11-05 21:42:26 +0100 |
commit | 127ba2896512699338d997418d7cf5064720b55b (patch) | |
tree | 8aa76a18dbc18c0d8f66d4b192ba81077b8950b1 /drivers | |
parent | 699b052ad2996c4ca87aa4b9d4a51dcca0f9e588 (diff) | |
download | linux-127ba2896512699338d997418d7cf5064720b55b.tar.gz linux-127ba2896512699338d997418d7cf5064720b55b.tar.bz2 linux-127ba2896512699338d997418d7cf5064720b55b.zip |
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')
-rw-r--r-- | drivers/ide/Kconfig | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig index 6eaece96524e..e2c216996037 100644 --- a/drivers/ide/Kconfig +++ b/drivers/ide/Kconfig @@ -152,9 +152,22 @@ config BLK_DEV_IDEDISK If unsure, say Y. config IDEDISK_MULTI_MODE - bool "Use multi-mode by default" - help - If you get this error, try to say Y here: + bool "Use multiple sector mode for Programmed Input/Output by default" + help + This setting is irrelevant for most IDE disks, with direct memory + access, to which multiple sector mode does not apply. Multiple sector + mode is a feature of most modern IDE hard drives, permitting the + transfer of multiple sectors per Programmed Input/Output interrupt, + rather than the usual one sector per interrupt. When this feature is + enabled, it can reduce operating system overhead for disk Programmed + Input/Output. On some systems, it also can increase the data + throughput of Programmed Input/Output. Some drives, however, seemed + to run slower with multiple sector mode enabled. Some drives claimed + to support multiple sector mode, but lost data at some settings. + Under rare circumstances, such failures could result in massive + filesystem corruption. + + If you get the following error, try to say Y here: hda: set_multmode: status=0x51 { DriveReady SeekComplete Error } hda: set_multmode: error=0x04 { DriveStatusError } |