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unimore/kernel-hacking-2024-linux-steffo
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s390 zfcp: sg fixups

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Based on initial patch from Heiko Carstens <heiko.carstens@de.ibm.com>

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2007-10-23 09:17:53 +02:00
parent 5edadbd0ae
commit 73fc4f0d2c
3 changed files with 9 additions and 6 deletions
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1
drivers/s390/scsi/zfcp_aux.c
View file

@ -559,6 +559,7 @@ zfcp_sg_list_alloc(struct zfcp_sg_list *sg_list, size_t size)
retval = -ENOMEM;
goto out;
}
sg_init_table(sg_list->sg, sg_list->count);
for (i = 0, sg = sg_list->sg; i < sg_list->count; i++, sg++) {
sg->length = min(size, PAGE_SIZE);

4
drivers/s390/scsi/zfcp_def.h
View file

@ -63,7 +63,7 @@
static inline void *
zfcp_sg_to_address(struct scatterlist *list)
{
return (void *) (page_address(list->page) + list->offset);
return sg_virt(list);
}
/**
@ -74,7 +74,7 @@ zfcp_sg_to_address(struct scatterlist *list)
static inline void
zfcp_address_to_sg(void *address, struct scatterlist *list)
{
list->page = virt_to_page(address);
sg_set_page(list, virt_to_page(address));
list->offset = ((unsigned long) address) & (PAGE_SIZE - 1);
}

10
drivers/s390/scsi/zfcp_erp.c
View file

@ -308,13 +308,15 @@ zfcp_erp_adisc(struct zfcp_port *port)
if (send_els == NULL)
goto nomem;
send_els->req = kzalloc(sizeof(struct scatterlist), GFP_ATOMIC);
send_els->req = kmalloc(sizeof(struct scatterlist), GFP_ATOMIC);
if (send_els->req == NULL)
goto nomem;
sg_init_table(send_els->req, 1);
send_els->resp = kzalloc(sizeof(struct scatterlist), GFP_ATOMIC);
send_els->resp = kmalloc(sizeof(struct scatterlist), GFP_ATOMIC);
if (send_els->resp == NULL)
goto nomem;
sg_init_table(send_els->resp, 1);
address = (void *) get_zeroed_page(GFP_ATOMIC);
if (address == NULL)
@ -363,7 +365,7 @@ zfcp_erp_adisc(struct zfcp_port *port)
retval = -ENOMEM;
freemem:
if (address != NULL)
__free_pages(send_els->req->page, 0);
__free_pages(sg_page(send_els->req), 0);
if (send_els != NULL) {
kfree(send_els->req);
kfree(send_els->resp);
@ -437,7 +439,7 @@ zfcp_erp_adisc_handler(unsigned long data)
out:
zfcp_port_put(port);
__free_pages(send_els->req->page, 0);
__free_pages(sg_page(send_els->req), 0);
kfree(send_els->req);
kfree(send_els->resp);
kfree(send_els);