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authorLorenzo Stoakes <lstoakes@gmail.com>2023-05-17 22:25:36 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-06-10 02:25:25 +0300
commit0b295316b3a9b7858eafbebdc31b4827a6edde03 (patch)
tree499bb57320197b04c550ad4215b227c31d930d14
parent54d020692b342f7bd02d7f5795fb5c401caecfcc (diff)
downloadlinux-0b295316b3a9b7858eafbebdc31b4827a6edde03.tar.xz
mm/gup: remove unused vmas parameter from pin_user_pages_remote()
No invocation of pin_user_pages_remote() uses the vmas parameter, so remove it. This forms part of a larger patch set eliminating the use of the vmas parameters altogether. Link: https://lkml.kernel.org/r/28f000beb81e45bf538a2aaa77c90f5482b67a32.1684350871.git.lstoakes@gmail.com Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com> Acked-by: David Hildenbrand <david@redhat.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian König <christian.koenig@amd.com> Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Janosch Frank <frankja@linux.ibm.com> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Sakari Ailus <sakari.ailus@linux.intel.com> Cc: Sean Christopherson <seanjc@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-rw-r--r--drivers/iommu/iommufd/pages.c4
-rw-r--r--drivers/vfio/vfio_iommu_type1.c2
-rw-r--r--include/linux/mm.h2
-rw-r--r--kernel/trace/trace_events_user.c2
-rw-r--r--mm/gup.c8
-rw-r--r--mm/process_vm_access.c2
6 files changed, 9 insertions, 11 deletions
diff --git a/drivers/iommu/iommufd/pages.c b/drivers/iommu/iommufd/pages.c
index 3c47846cc5ef..412ca96be128 100644
--- a/drivers/iommu/iommufd/pages.c
+++ b/drivers/iommu/iommufd/pages.c
@@ -786,7 +786,7 @@ static int pfn_reader_user_pin(struct pfn_reader_user *user,
user->locked = 1;
}
rc = pin_user_pages_remote(pages->source_mm, uptr, npages,
- user->gup_flags, user->upages, NULL,
+ user->gup_flags, user->upages,
&user->locked);
}
if (rc <= 0) {
@@ -1799,7 +1799,7 @@ static int iopt_pages_rw_page(struct iopt_pages *pages, unsigned long index,
rc = pin_user_pages_remote(
pages->source_mm, (uintptr_t)(pages->uptr + index * PAGE_SIZE),
1, (flags & IOMMUFD_ACCESS_RW_WRITE) ? FOLL_WRITE : 0, &page,
- NULL, NULL);
+ NULL);
mmap_read_unlock(pages->source_mm);
if (rc != 1) {
if (WARN_ON(rc >= 0))
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 0d2f805468e1..306e6f1d1c70 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -562,7 +562,7 @@ static int vaddr_get_pfns(struct mm_struct *mm, unsigned long vaddr,
mmap_read_lock(mm);
ret = pin_user_pages_remote(mm, vaddr, npages, flags | FOLL_LONGTERM,
- pages, NULL, NULL);
+ pages, NULL);
if (ret > 0) {
int i;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 6336253c18e2..cf17ffdf4fbf 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2367,7 +2367,7 @@ long get_user_pages_remote(struct mm_struct *mm,
long pin_user_pages_remote(struct mm_struct *mm,
unsigned long start, unsigned long nr_pages,
unsigned int gup_flags, struct page **pages,
- struct vm_area_struct **vmas, int *locked);
+ int *locked);
long get_user_pages(unsigned long start, unsigned long nr_pages,
unsigned int gup_flags, struct page **pages);
long pin_user_pages(unsigned long start, unsigned long nr_pages,
diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c
index b1ecd7677642..bdc2666e8d39 100644
--- a/kernel/trace/trace_events_user.c
+++ b/kernel/trace/trace_events_user.c
@@ -406,7 +406,7 @@ static int user_event_enabler_write(struct user_event_mm *mm,
return -EBUSY;
ret = pin_user_pages_remote(mm->mm, uaddr, 1, FOLL_WRITE | FOLL_NOFAULT,
- &page, NULL, NULL);
+ &page, NULL);
if (unlikely(ret <= 0)) {
if (!fixup_fault)
diff --git a/mm/gup.c b/mm/gup.c
index 21daeee5f163..edf0fe2695b0 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -3100,8 +3100,6 @@ EXPORT_SYMBOL_GPL(pin_user_pages_fast);
* @gup_flags: flags modifying lookup behaviour
* @pages: array that receives pointers to the pages pinned.
* Should be at least nr_pages long.
- * @vmas: array of pointers to vmas corresponding to each page.
- * Or NULL if the caller does not require them.
* @locked: pointer to lock flag indicating whether lock is held and
* subsequently whether VM_FAULT_RETRY functionality can be
* utilised. Lock must initially be held.
@@ -3116,14 +3114,14 @@ EXPORT_SYMBOL_GPL(pin_user_pages_fast);
long pin_user_pages_remote(struct mm_struct *mm,
unsigned long start, unsigned long nr_pages,
unsigned int gup_flags, struct page **pages,
- struct vm_area_struct **vmas, int *locked)
+ int *locked)
{
int local_locked = 1;
- if (!is_valid_gup_args(pages, vmas, locked, &gup_flags,
+ if (!is_valid_gup_args(pages, NULL, locked, &gup_flags,
FOLL_PIN | FOLL_TOUCH | FOLL_REMOTE))
return 0;
- return __gup_longterm_locked(mm, start, nr_pages, pages, vmas,
+ return __gup_longterm_locked(mm, start, nr_pages, pages, NULL,
locked ? locked : &local_locked,
gup_flags);
}
diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
index 78dfaf9e8990..0523edab03a6 100644
--- a/mm/process_vm_access.c
+++ b/mm/process_vm_access.c
@@ -104,7 +104,7 @@ static int process_vm_rw_single_vec(unsigned long addr,
mmap_read_lock(mm);
pinned_pages = pin_user_pages_remote(mm, pa, pinned_pages,
flags, process_pages,
- NULL, &locked);
+ &locked);
if (locked)
mmap_read_unlock(mm);
if (pinned_pages <= 0)