From mboxrd@z Thu Jan 1 00:00:00 1970 From: Carl-Daniel Hailfinger Subject: maximum ide request size reduced with 2.5.15-git? Date: Sat, 14 Jan 2006 20:17:11 +0100 Message-ID: <43C94E37.9090909@gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: Received: from mail.gmx.net ([213.165.64.21]:60078 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S1750818AbWANTRQ (ORCPT ); Sat, 14 Jan 2006 14:17:16 -0500 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Hi, it seems that the maximum request size for my hard drive was reduced with one of the patches between 2.6.15 and 2.6.15-git10. diff between 2.6.15 and 2.6.15-git10 follows: Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx ICH4: IDE controller at PCI slot 0000:00:1f.1 PCI: Enabling device 0000:00:1f.1 (0005 -> 0007) ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 5 ACPI: PCI Interrupt 0000:00:1f.1[A] -> Link [LNKC] -> GSI 5 (level, low) -> IRQ 5 ICH4: chipset revision 3 ICH4: not 100% native mode: will probe irqs later ide0: BM-DMA at 0x1860-0x1867, BIOS settings: hda:pio, hdb:pio ide1: BM-DMA at 0x1868-0x186f, BIOS settings: hdc:pio, hdd:pio Probing IDE interface ide0... hda: SAMSUNG MP0804H, ATA DISK drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Probing IDE interface ide1... hdc: DV-W24ES, ATAPI CD/DVD-ROM drive ide1 at 0x170-0x177,0x376 on irq 15 -hda: max request size: 1024KiB +hda: max request size: 512KiB hda: 156368016 sectors (80060 MB) w/8192KiB Cache, CHS=16383/255/63, UDMA(100) hda: cache flushes supported hda: hda1 hda2 < hda5 hda6 hda7 hda8 hda9 hda10 > hdc: ATAPI 24X DVD-ROM DVD-R-RAM CD-R/RW drive, 2193kB Cache Uniform CD-ROM driver Revision: 3.20 Will this affect performance, and if so, how can I get the old settings back? Regards, Carl-Daniel