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| author | Jie Liu <jeff.liu@oracle.com> | 2013-11-13 20:59:58 +0800 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2014-01-06 10:07:29 -0500 |
| commit | 9346c2a8defab777d1fba6bcc284f6ada181fe96 (patch) | |
| tree | 4597a6c868c0e106dc19058df0efaaea1a6b2eb0 /drivers/xen | |
| parent | 02bcf053e9c5dfbb541b8e27a8eeb962a54d577b (diff) | |
| download | op-kernel-dev-9346c2a8defab777d1fba6bcc284f6ada181fe96.zip op-kernel-dev-9346c2a8defab777d1fba6bcc284f6ada181fe96.tar.gz | |
xen: simplify balloon_first_page() with list_first_entry_or_null()
Replace the code logic at balloon_first_page() by calling
list_first_entry_or_null() directly. since here is only
one user of that routine, therefore we can just remove it.
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/balloon.c | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 4c02e2b..37d06ea 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -157,13 +157,6 @@ static struct page *balloon_retrieve(bool prefer_highmem) return page; } -static struct page *balloon_first_page(void) -{ - if (list_empty(&ballooned_pages)) - return NULL; - return list_entry(ballooned_pages.next, struct page, lru); -} - static struct page *balloon_next_page(struct page *page) { struct list_head *next = page->lru.next; @@ -328,7 +321,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages) if (nr_pages > ARRAY_SIZE(frame_list)) nr_pages = ARRAY_SIZE(frame_list); - page = balloon_first_page(); + page = list_first_entry_or_null(&ballooned_pages, struct page, lru); for (i = 0; i < nr_pages; i++) { if (!page) { nr_pages = i; |
