mm/gup: remove task_struct pointer for all gup code
After the cleanup of page fault accounting, gup does not need to pass
task_struct around any more. Remove that parameter in the whole gup
stack.
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Link: http://lkml.kernel.org/r/20200707225021.200906-26-peterx@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 49047d47..649fd53 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -376,7 +376,7 @@ __update_ref_ctr(struct mm_struct *mm, unsigned long vaddr, short d)
if (!vaddr || !d)
return -EINVAL;
- ret = get_user_pages_remote(NULL, mm, vaddr, 1,
+ ret = get_user_pages_remote(mm, vaddr, 1,
FOLL_WRITE, &page, &vma, NULL);
if (unlikely(ret <= 0)) {
/*
@@ -477,7 +477,7 @@ int uprobe_write_opcode(struct arch_uprobe *auprobe, struct mm_struct *mm,
if (is_register)
gup_flags |= FOLL_SPLIT_PMD;
/* Read the page with vaddr into memory */
- ret = get_user_pages_remote(NULL, mm, vaddr, 1, gup_flags,
+ ret = get_user_pages_remote(mm, vaddr, 1, gup_flags,
&old_page, &vma, NULL);
if (ret <= 0)
return ret;
@@ -2029,7 +2029,7 @@ static int is_trap_at_addr(struct mm_struct *mm, unsigned long vaddr)
* but we treat this as a 'remote' access since it is
* essentially a kernel access to the memory.
*/
- result = get_user_pages_remote(NULL, mm, vaddr, 1, FOLL_FORCE, &page,
+ result = get_user_pages_remote(mm, vaddr, 1, FOLL_FORCE, &page,
NULL, NULL);
if (result < 0)
return result;
