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dkim=pass header.d=oracle.com header.s=corp-2021-07-09 header.b="j/KoMtGI"; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=uYwFyzuO; spf=none (imf09.hostedemail.com: domain of liam.howlett@oracle.com has no SPF policy when checking 205.220.165.32) smtp.mailfrom=liam.howlett@oracle.com; dmarc=pass (policy=none) header.from=oracle.com X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: D524C140008 X-HE-Tag: 1643770774-302837 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: "Liam R. Howlett" vma_lookup() walks the VMA tree for a specific value, find_vma() will search the tree after walking to a specific value. It is more efficient to only walk to the requested value since privcmd_ioctl_mmap() will exit the loop if vm_start !=3D msg->va. Signed-off-by: Liam R. Howlett Acked-by: Vlastimil Babka --- drivers/xen/privcmd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index 3369734108af..ad17166b0ef6 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -282,7 +282,7 @@ static long privcmd_ioctl_mmap(struct file *file, void = __user *udata) struct page, lru); struct privcmd_mmap_entry *msg =3D page_address(page); =20 - vma =3D find_vma(mm, msg->va); + vma =3D vma_lookup(mm, msg->va); rc =3D -EINVAL; =20 if (!vma || (msg->va !=3D vma->vm_start) || vma->vm_private_data) --=20 2.34.1