mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 05:04:00 +08:00
Merge branch 'stable/for-jens-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-3.8/drivers
This commit is contained in:
commit
84ad6845fb
@ -212,6 +212,39 @@ static struct persistent_gnt *get_persistent_gnt(struct rb_root *root,
|
|||||||
return NULL;
|
return NULL;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static void free_persistent_gnts(struct rb_root *root, unsigned int num)
|
||||||
|
{
|
||||||
|
struct gnttab_unmap_grant_ref unmap[BLKIF_MAX_SEGMENTS_PER_REQUEST];
|
||||||
|
struct page *pages[BLKIF_MAX_SEGMENTS_PER_REQUEST];
|
||||||
|
struct persistent_gnt *persistent_gnt;
|
||||||
|
int ret = 0;
|
||||||
|
int segs_to_unmap = 0;
|
||||||
|
|
||||||
|
foreach_grant(persistent_gnt, root, node) {
|
||||||
|
BUG_ON(persistent_gnt->handle ==
|
||||||
|
BLKBACK_INVALID_HANDLE);
|
||||||
|
gnttab_set_unmap_op(&unmap[segs_to_unmap],
|
||||||
|
(unsigned long) pfn_to_kaddr(page_to_pfn(
|
||||||
|
persistent_gnt->page)),
|
||||||
|
GNTMAP_host_map,
|
||||||
|
persistent_gnt->handle);
|
||||||
|
|
||||||
|
pages[segs_to_unmap] = persistent_gnt->page;
|
||||||
|
rb_erase(&persistent_gnt->node, root);
|
||||||
|
kfree(persistent_gnt);
|
||||||
|
num--;
|
||||||
|
|
||||||
|
if (++segs_to_unmap == BLKIF_MAX_SEGMENTS_PER_REQUEST ||
|
||||||
|
!rb_next(&persistent_gnt->node)) {
|
||||||
|
ret = gnttab_unmap_refs(unmap, NULL, pages,
|
||||||
|
segs_to_unmap);
|
||||||
|
BUG_ON(ret);
|
||||||
|
segs_to_unmap = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
BUG_ON(num != 0);
|
||||||
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Retrieve from the 'pending_reqs' a free pending_req structure to be used.
|
* Retrieve from the 'pending_reqs' a free pending_req structure to be used.
|
||||||
*/
|
*/
|
||||||
@ -358,11 +391,6 @@ int xen_blkif_schedule(void *arg)
|
|||||||
{
|
{
|
||||||
struct xen_blkif *blkif = arg;
|
struct xen_blkif *blkif = arg;
|
||||||
struct xen_vbd *vbd = &blkif->vbd;
|
struct xen_vbd *vbd = &blkif->vbd;
|
||||||
struct gnttab_unmap_grant_ref unmap[BLKIF_MAX_SEGMENTS_PER_REQUEST];
|
|
||||||
struct page *pages[BLKIF_MAX_SEGMENTS_PER_REQUEST];
|
|
||||||
struct persistent_gnt *persistent_gnt;
|
|
||||||
int ret = 0;
|
|
||||||
int segs_to_unmap = 0;
|
|
||||||
|
|
||||||
xen_blkif_get(blkif);
|
xen_blkif_get(blkif);
|
||||||
|
|
||||||
@ -391,34 +419,12 @@ int xen_blkif_schedule(void *arg)
|
|||||||
}
|
}
|
||||||
|
|
||||||
/* Free all persistent grant pages */
|
/* Free all persistent grant pages */
|
||||||
if (!RB_EMPTY_ROOT(&blkif->persistent_gnts)) {
|
if (!RB_EMPTY_ROOT(&blkif->persistent_gnts))
|
||||||
foreach_grant(persistent_gnt, &blkif->persistent_gnts, node) {
|
free_persistent_gnts(&blkif->persistent_gnts,
|
||||||
BUG_ON(persistent_gnt->handle ==
|
blkif->persistent_gnt_c);
|
||||||
BLKBACK_INVALID_HANDLE);
|
|
||||||
gnttab_set_unmap_op(&unmap[segs_to_unmap],
|
|
||||||
(unsigned long) pfn_to_kaddr(page_to_pfn(
|
|
||||||
persistent_gnt->page)),
|
|
||||||
GNTMAP_host_map,
|
|
||||||
persistent_gnt->handle);
|
|
||||||
|
|
||||||
pages[segs_to_unmap] = persistent_gnt->page;
|
|
||||||
rb_erase(&persistent_gnt->node,
|
|
||||||
&blkif->persistent_gnts);
|
|
||||||
kfree(persistent_gnt);
|
|
||||||
blkif->persistent_gnt_c--;
|
|
||||||
|
|
||||||
if (++segs_to_unmap == BLKIF_MAX_SEGMENTS_PER_REQUEST ||
|
|
||||||
!rb_next(&persistent_gnt->node)) {
|
|
||||||
ret = gnttab_unmap_refs(unmap, NULL, pages,
|
|
||||||
segs_to_unmap);
|
|
||||||
BUG_ON(ret);
|
|
||||||
segs_to_unmap = 0;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
BUG_ON(blkif->persistent_gnt_c != 0);
|
|
||||||
BUG_ON(!RB_EMPTY_ROOT(&blkif->persistent_gnts));
|
BUG_ON(!RB_EMPTY_ROOT(&blkif->persistent_gnts));
|
||||||
|
blkif->persistent_gnt_c = 0;
|
||||||
|
|
||||||
if (log_stats)
|
if (log_stats)
|
||||||
print_stats(blkif);
|
print_stats(blkif);
|
||||||
|
@ -806,6 +806,7 @@ static void blkif_free(struct blkfront_info *info, int suspend)
|
|||||||
all_gnts = llist_del_all(&info->persistent_gnts);
|
all_gnts = llist_del_all(&info->persistent_gnts);
|
||||||
llist_for_each_entry(persistent_gnt, all_gnts, node) {
|
llist_for_each_entry(persistent_gnt, all_gnts, node) {
|
||||||
gnttab_end_foreign_access(persistent_gnt->gref, 0, 0UL);
|
gnttab_end_foreign_access(persistent_gnt->gref, 0, 0UL);
|
||||||
|
__free_page(pfn_to_page(persistent_gnt->pfn));
|
||||||
kfree(persistent_gnt);
|
kfree(persistent_gnt);
|
||||||
}
|
}
|
||||||
info->persistent_gnts_c = 0;
|
info->persistent_gnts_c = 0;
|
||||||
|
Loading…
Reference in New Issue
Block a user