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charset="utf-8" In 2019, we introduced pin_user_pages*() and now we are converting get_user_pages*() to the new API as appropriate. [1] & [2] could be referred for more information. This is case 5 as per document [1]. [1] Documentation/core-api/pin_user_pages.rst [2] "Explicit pinning of user-space pages": https://lwn.net/Articles/807108/ Signed-off-by: Souptick Joarder Cc: John Hubbard Cc: Boris Ostrovsky Cc: Paul Durrant Reviewed-by: Juergen Gross --- drivers/xen/privcmd.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index f6c1543..5c5cd24 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -594,7 +594,7 @@ static int lock_pages( if (requested > nr_pages) return -ENOSPC; =20 - page_count =3D get_user_pages_fast( + page_count =3D pin_user_pages_fast( (unsigned long) kbufs[i].uptr, requested, FOLL_WRITE, pages); if (page_count < 0) @@ -610,13 +610,7 @@ static int lock_pages( =20 static void unlock_pages(struct page *pages[], unsigned int nr_pages) { - unsigned int i; - - for (i =3D 0; i < nr_pages; i++) { - if (!PageDirty(pages[i])) - set_page_dirty_lock(pages[i]); - put_page(pages[i]); - } + unpin_user_pages_dirty_lock(pages, nr_pages, true); } =20 static long privcmd_ioctl_dm_op(struct file *file, void __user *udata) --=20 1.9.1