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[PATCH] ide: option to disable cache flushes for buggy drives

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Some drives claim they support cache flushing, but get seriously
confused if you try. Add this option to be able to boot with
barriers enabled by default.

Signed-off-by: Jens Axboe <axboe@suse.de>
This commit is contained in:
Jens Axboe
2006-07-28 08:54:59 +02:00
parent 64821324ca
commit 361934849e
3 changed files with 6 additions and 2 deletions
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2
drivers/ide/ide-disk.c
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@@ -776,7 +776,7 @@ static void update_ordered(ide_drive_t *drive)
* not available so we don't need to recheck that.
*/
capacity = idedisk_capacity(drive);
barrier = ide_id_has_flush_cache(id) &&
barrier = ide_id_has_flush_cache(id) && !drive->noflush &&
(drive->addressing == 0 || capacity <= (1ULL << 28) ||
ide_id_has_flush_cache_ext(id));