http://bugzilla.kernel.org/show_bug.cgi?id=12320 ------- Comment #6 from nm127@xxxxxxxxxxx 2008-12-29 07:49 ------- Created an attachment (id=19528) --> (http://bugzilla.kernel.org/attachment.cgi?id=19528&action=view) git bisect log (In reply to comment #3) > I started to git bisecting the problem but this might take a while. The result of git bisecting is: 9bd27cba1aeacb6b12d05f4e5ed6361072f08fe0 is first bad commit commit 9bd27cba1aeacb6b12d05f4e5ed6361072f08fe0 Author: Borislav Petkov <petkovbb@xxxxxxxxx> Date: Sun Nov 2 21:40:07 2008 +0100 ide-cd: fix DMA alignment regression e5318b531b008c79d2a0c0df06a7b8628da38e2f ("ide: use the dma safe check for REQ_TYPE_ATA_PC") introduced a regression which caused some ATAPI drives to turn off DMA for REQ_TYPE_BLOCK_PC commands while burning and thus degrading performance and ultimately causing an excessive amount of underruns. The issue is documented also in: http://bugzilla.kernel.org/show_bug.cgi?id=11742. Signed-off-by: Borislav Petkov <petkovbb@xxxxxxxxx> Cc: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> Tested-by: Valerio Passini <valerio.passini@xxxxxxxxx> [bart: fixup patch description per comments from Sergei Shtylyov] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> :040000 040000 998c57acb8e63f2f1d64543f2c03ecfc05beb3a0 fef197de8e3c9db1308917eaeb1c10f196a8a8ab M drivers (In reply to comment #4) > can you try the following patch on a failing kernel and send me the whole dmesg output? I'll have a look. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
