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[SCSI] scsi_kmap_atomic_sg(): check that local irqs are disabled

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The KM_BIO_SRC_IRQ kmap slot must be taken with local irqs disabled.  Add a
check into scsi for this.

Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Andrew Morton 2007-02-05 16:39:03 -08:00 committed by James Bottomley
parent 4474643897
commit 22cfefb56b
1 changed files with 2 additions and 0 deletions
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2
drivers/scsi/scsi_lib.c
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@ -2250,6 +2250,8 @@ void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count,
size_t sg_len = 0, len_complete = 0;
struct page *page;
WARN_ON(!irqs_disabled());
for (i = 0; i < sg_count; i++) {
len_complete = sg_len; /* Complete sg-entries */
sg_len += sg[i].length;