xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Garpu 0
Kode Masalah Tarik Permintaan Actions Packages Projects Rilis Wiki Kegiatan

xen/grant-table: add helpers for allocating pages

Telusuri Sumber 
Add gnttab_alloc_pages() and gnttab_free_pages() to allocate/free pages
suitable to for granted maps.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This commit is contained in:
David Vrabel
2015-01-08 18:06:01 +00:00
orang tua 0ae65f49af
melakukan ff4b156f16
6 mengubah file dengan 44 tambahan dan 13 penghapusan
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/xen/xen-scsiback.c
Melihat File

@@ -227,7 +227,7 @@ static void put_free_pages(struct page **page, int num)
return;
if (i > scsiback_max_buffer_pages) {
n = min(num, i - scsiback_max_buffer_pages);
free_xenballooned_pages(n, page + num - n);
gnttab_free_pages(n, page + num - n);
n = num - n;
}
spin_lock_irqsave(&free_pages_lock, flags);
@@ -244,7 +244,7 @@ static int get_free_page(struct page **page)
spin_lock_irqsave(&free_pages_lock, flags);
if (list_empty(&scsiback_free_pages)) {
spin_unlock_irqrestore(&free_pages_lock, flags);
return alloc_xenballooned_pages(1, page, false);
return gnttab_alloc_pages(1, page);
}
page[0] = list_first_entry(&scsiback_free_pages, struct page, lru);
list_del(&page[0]->lru);
@@ -2106,7 +2106,7 @@ static void __exit scsiback_exit(void)
while (free_pages_num) {
if (get_free_page(&page))
BUG();
free_xenballooned_pages(1, &page);
gnttab_free_pages(1, &page);
}
scsiback_deregister_configfs();
xenbus_unregister_driver(&scsiback_driver);