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authorChristian Borntraeger <cborntra@de.ibm.com>2006-04-27 18:40:11 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-28 08:33:48 -0700
commit40ac6b204c20da09b64b6dcc10c68b6e7bd9fadd (patch)
tree03a5968a6db56c3365c3440e2f5141c8677d47d2
parent39ccf95e28765a08a9e01be614695d7c570b4e77 (diff)
downloadblackbird-op-linux-40ac6b204c20da09b64b6dcc10c68b6e7bd9fadd.tar.gz
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[PATCH] s390: fix slab debugging
With CONFIG_SLAB_DEBUG=y networking over qeth doesn't work. The problem is that the qib structure embedded in the qeth_irq structure needs an alignment of 256 but kmalloc only guarantees an alignment of 8. When using SLAB debugging the alignment of qeth_irq is not sufficient for the embedded qib structure which causes all users of qdio (qeth and zfcp) to stop working. Allocate qeth_irq structure with __get_free_page. That wastes a small amount of memory (~2500 bytes) per online adapter. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--drivers/s390/cio/qdio.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index a5bf272fe775..96f519281d92 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -1640,7 +1640,7 @@ next:
}
kfree(irq_ptr->qdr);
- kfree(irq_ptr);
+ free_page((unsigned long) irq_ptr);
}
static void
@@ -2983,7 +2983,7 @@ qdio_allocate(struct qdio_initialize *init_data)
qdio_allocate_do_dbf(init_data);
/* create irq */
- irq_ptr = kzalloc(sizeof(struct qdio_irq), GFP_KERNEL | GFP_DMA);
+ irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
@@ -2998,7 +2998,7 @@ qdio_allocate(struct qdio_initialize *init_data)
/* QDR must be in DMA area since CCW data address is only 32 bit */
irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
if (!(irq_ptr->qdr)) {
- kfree(irq_ptr);
+ free_page((unsigned long) irq_ptr);
QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
return -ENOMEM;
}
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