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| author | Joao Martins <joao.m.martins@oracle.com> | 2021-04-30 08:55:50 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-30 21:20:37 +0300 |
| commit | 458a4f788f8602e5701b3d8c2fb6b021310a7301 (patch) | |
| tree | 54e4b4a81c6203e3a59109e140eb27b8d224220a /include/linux/mm.h | |
| parent | 31b912de1316644040ca9a0fb9b514ffa462c20c (diff) | |
| download | linux-458a4f788f8602e5701b3d8c2fb6b021310a7301.tar.xz | |
mm/gup: add a range variant of unpin_user_pages_dirty_lock()
Add an unpin_user_page_range_dirty_lock() API which takes a starting page
and how many consecutive pages we want to unpin and optionally dirty.
To that end, define another iterator for_each_compound_range() that
operates in page ranges as opposed to page array.
For users (like RDMA mr_dereg) where each sg represents a contiguous set
of pages, we're able to more efficiently unpin pages without having to
supply an array of pages much of what happens today with
unpin_user_pages().
Link: https://lkml.kernel.org/r/20210212130843.13865-4-joao.m.martins@oracle.com
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 2e5c207e702c..702c2a7379d6 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1265,6 +1265,8 @@ static inline void put_page(struct page *page) void unpin_user_page(struct page *page); void unpin_user_pages_dirty_lock(struct page **pages, unsigned long npages, bool make_dirty); +void unpin_user_page_range_dirty_lock(struct page *page, unsigned long npages, + bool make_dirty); void unpin_user_pages(struct page **pages, unsigned long npages); /** |