The blktap driver likes to hard code PAGE_SIZE. This changes it to
use getpagesize(), thereby allowing it to build on ia64. Thanks,
Alex
Signed-off-by: Alex Williamson <alex.williamson@xxxxxx>
---
diff -r f692a0a476c5 tools/blktap/drivers/tapdisk.c
--- a/tools/blktap/drivers/tapdisk.c Thu Jul 13 15:33:08 2006 +0100
+++ b/tools/blktap/drivers/tapdisk.c Thu Jul 13 16:52:11 2006 -0600
@@ -83,8 +83,8 @@ static void unmap_disk(struct td_state *
drv->td_close(s);
- if (info != NULL && info->mem > 0)
- munmap(info->mem, PAGE_SIZE * BLKTAP_MMAP_REGION_SIZE);
+ if (info != NULL && info->mem > 0)
+ munmap(info->mem, getpagesize() * BLKTAP_MMAP_REGION_SIZE);
ptr = s->fd_entry;
prev = ptr->prev;
@@ -219,6 +219,7 @@ static int map_new_dev(struct td_state *
tapdev_info_t *info = s->ring_info;
char *devname;
fd_list_entry_t *ptr;
+ int page_size;
asprintf(&devname,"%s/%s%d", BLKTAP_DEV_DIR, BLKTAP_DEV_NAME, minor);
tap_fd = open(devname, O_RDWR);
@@ -230,7 +231,8 @@ static int map_new_dev(struct td_state *
info->fd = tap_fd;
/*Map the shared memory*/
- info->mem = mmap(0, PAGE_SIZE * BLKTAP_MMAP_REGION_SIZE,
+ page_size = getpagesize();
+ info->mem = mmap(0, page_size * BLKTAP_MMAP_REGION_SIZE,
PROT_READ | PROT_WRITE, MAP_SHARED, info->fd, 0);
if ((long int)info->mem == -1)
{
@@ -240,10 +242,10 @@ static int map_new_dev(struct td_state *
/* assign the rings to the mapped memory */
info->sring = (blkif_sring_t *)((unsigned long)info->mem);
- BACK_RING_INIT(&info->fe_ring, info->sring, PAGE_SIZE);
+ BACK_RING_INIT(&info->fe_ring, info->sring, page_size);
info->vstart =
- (unsigned long)info->mem + (BLKTAP_RING_PAGES << PAGE_SHIFT);
+ (unsigned long)info->mem + (BLKTAP_RING_PAGES * page_size);
ioctl(info->fd, BLKTAP_IOCTL_SENDPID, process );
ioctl(info->fd, BLKTAP_IOCTL_SETMODE, BLKTAP_MODE_INTERPOSE );
@@ -481,6 +483,7 @@ static void get_io_request(struct td_sta
struct tap_disk *drv = s->drv;
blkif_t *blkif = s->blkif;
tapdev_info_t *info = s->ring_info;
+ int page_size = getpagesize();
if (!run) return; /*We have received signal to close*/
@@ -508,7 +511,7 @@ static void get_io_request(struct td_sta
nsects = req->seg[i].last_sect -
req->seg[i].first_sect + 1;
- if ((req->seg[i].last_sect >= PAGE_SIZE >> 9) ||
+ if ((req->seg[i].last_sect >= page_size >> 9) ||
(nsects <= 0))
continue;
diff -r f692a0a476c5 tools/blktap/lib/blktaplib.h
--- a/tools/blktap/lib/blktaplib.h Thu Jul 13 15:33:08 2006 +0100
+++ b/tools/blktap/lib/blktaplib.h Thu Jul 13 16:52:11 2006 -0600
@@ -41,7 +41,7 @@
#include <sys/types.h>
#include <unistd.h>
-#define BLK_RING_SIZE __RING_SIZE((blkif_sring_t *)0, PAGE_SIZE)
+#define BLK_RING_SIZE __RING_SIZE((blkif_sring_t *)0, getpagesize())
/* size of the extra VMA area to map in attached pages. */
#define BLKTAP_VMA_PAGES BLK_RING_SIZE
@@ -206,8 +206,8 @@ int xs_fire_next_watch(struct xs_handle
(MAX_PENDING_REQS * BLKIF_MAX_SEGMENTS_PER_REQUEST)
#define MMAP_VADDR(_vstart,_req,_seg) \
((_vstart) + \
- ((_req) * BLKIF_MAX_SEGMENTS_PER_REQUEST * PAGE_SIZE) + \
- ((_seg) * PAGE_SIZE))
+ ((_req) * BLKIF_MAX_SEGMENTS_PER_REQUEST * getpagesize()) + \
+ ((_seg) * getpagesize()))
/* Defines that are only used by library clients */
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