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authorBorislav Petkov <petkovbb@googlemail.com>2008-04-26 19:36:37 +0400
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-04-26 19:36:37 +0400
commit968c49641338f4fb71d35352d49b1d25a68c5e93 (patch)
treefbff834006b20bfac4af6dbc70b951a31bc2f3af /drivers/ide/ide-cd.h
parent9841654949f0a3f1289b6b95b2ab56cd99fb5360 (diff)
downloadlinux-968c49641338f4fb71d35352d49b1d25a68c5e93.tar.xz
ide-cd: remove the internal 64k buffer
This removes the internal ide-cd buffer and falls back to read-ahead block layer capabilities. Thorough testing (cd burning, dvd read, raw read) gives with the bufferless mode marginally better performance in addition to simplified code. bufferless: dd: reading `/dev/hdc': Input/output error 6238+0 records in 6238+0 records out 204406784 bytes (204 MB) copied, 259.891 s, 787 kB/s real 4m21.598s user 0m0.014s sys 0m0.744s with the old buffer (2.6.25-rc1): dd: reading `/dev/hdc': Input/output error 6238+0 records in 6238+0 records out 204406784 bytes (204 MB) copied, 262.893 s, 778 kB/s real 4m22.938s user 0m0.009s sys 0m0.771s Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-cd.h')
-rw-r--r--drivers/ide/ide-cd.h4
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/ide/ide-cd.h b/drivers/ide/ide-cd.h
index 22e3751a681e..a58801c4484d 100644
--- a/drivers/ide/ide-cd.h
+++ b/drivers/ide/ide-cd.h
@@ -119,10 +119,6 @@ struct cdrom_info {
struct atapi_toc *toc;
- unsigned long sector_buffered;
- unsigned long nsectors_buffered;
- unsigned char *buffer;
-
/* The result of the last successful request sense command
on this device. */
struct request_sense sense_data;