From ff77456ae8fcd2d3140de34019fb75b8c345f185 Mon Sep 17 00:00:00 2001 From: Maxime Bizon Date: Thu, 16 Jul 2009 06:32:52 +0000 Subject: [PATCH] ide: fix memory leak when flush command is issued commit bc146d23d1358af43f03793c3ad8c9f16bbcffcb upstream. I'm using ide on 2.6.30.1 with xfs filesystem. I noticed a kernel memory leak after writing lots of data, the kmalloc-96 slab cache keeps growing. It seems the struct ide_cmd kmalloced by idedisk_prepare_flush is never kfreed. Commit a09485df9cda49fbde2766c86eb18a9cae585162 ("ide: move request type specific code from ide_end_drive_cmd() to callers (v3)") and f505d49ffd25ed062e76ffd17568d3937fcd338c ("ide: fix barriers support") cause this regression, cmd->rq must now be set for ide_complete_cmd to honor the IDE_TFLAG_DYN flag. Signed-off-by: Maxime Bizon Acked-by: Bartlomiej Zolnierkiewicz Signed-off-by: David S. Miller Cc: Simon Kirby Signed-off-by: Greg Kroah-Hartman --- drivers/ide/ide-disk.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index a9fbe2c31210..08f0fe0e7ae5 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -413,6 +413,7 @@ static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) rq->cmd_type = REQ_TYPE_ATA_TASKFILE; rq->cmd_flags |= REQ_SOFTBARRIER; rq->special = cmd; + cmd->rq = rq; } ide_devset_get(multcount, mult_count); -- 2.39.5