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| author | Nadav Amit <namit@vmware.com> | 2019-04-25 04:54:42 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-24 20:19:17 +0200 |
| commit | 418a3ab1e7785799193c0f8628cd0f01c00a03ae (patch) | |
| tree | d861dba41aab6ec9d35e6fc798cfe8cdaed5fcfb /include/linux/balloon_compaction.h | |
| parent | 687685a3f246756a2a8c0d45820be42066ffce05 (diff) | |
| download | lwn-418a3ab1e7785799193c0f8628cd0f01c00a03ae.tar.gz lwn-418a3ab1e7785799193c0f8628cd0f01c00a03ae.zip | |
mm/balloon_compaction: List interfaces
Introduce interfaces for ballooning enqueueing and dequeueing of a list
of pages. These interfaces reduce the overhead of storing and restoring
IRQs by batching the operations. In addition they do not panic if the
list of pages is empty.
Cc: Jason Wang <jasowang@redhat.com>
Cc: linux-mm@kvack.org
Cc: virtualization@lists.linux-foundation.org
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Xavier Deguillard <xdeguillard@vmware.com>
Signed-off-by: Nadav Amit <namit@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/balloon_compaction.h')
| -rw-r--r-- | include/linux/balloon_compaction.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h index f31521dcb09a..338aa27e4773 100644 --- a/include/linux/balloon_compaction.h +++ b/include/linux/balloon_compaction.h @@ -64,6 +64,10 @@ extern struct page *balloon_page_alloc(void); extern void balloon_page_enqueue(struct balloon_dev_info *b_dev_info, struct page *page); extern struct page *balloon_page_dequeue(struct balloon_dev_info *b_dev_info); +extern size_t balloon_page_list_enqueue(struct balloon_dev_info *b_dev_info, + struct list_head *pages); +extern size_t balloon_page_list_dequeue(struct balloon_dev_info *b_dev_info, + struct list_head *pages, size_t n_req_pages); static inline void balloon_devinfo_init(struct balloon_dev_info *balloon) { |