The patch titled
Subject: mm/gup: remove unused get_user_pages_locked()
has been removed from the -mm tree. Its filename was
mm-gup-remove-unused-get_user_pages_locked.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: John Hubbard <jhubbard@xxxxxxxxxx>
Subject: mm/gup: remove unused get_user_pages_locked()
Now that the last caller of get_user_pages_locked() is gone, remove it.
Link: https://lkml.kernel.org/r/20220204020010.68930-6-jhubbard@xxxxxxxxxx
Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Cc: Alex Williamson <alex.williamson@xxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 2 -
mm/gup.c | 59 -------------------------------------------
2 files changed, 61 deletions(-)
--- a/include/linux/mm.h~mm-gup-remove-unused-get_user_pages_locked
+++ a/include/linux/mm.h
@@ -1916,8 +1916,6 @@ long get_user_pages(unsigned long start,
long pin_user_pages(unsigned long start, unsigned long nr_pages,
unsigned int gup_flags, struct page **pages,
struct vm_area_struct **vmas);
-long get_user_pages_locked(unsigned long start, unsigned long nr_pages,
- unsigned int gup_flags, struct page **pages, int *locked);
long get_user_pages_unlocked(unsigned long start, unsigned long nr_pages,
struct page **pages, unsigned int gup_flags);
long pin_user_pages_unlocked(unsigned long start, unsigned long nr_pages,
--- a/mm/gup.c~mm-gup-remove-unused-get_user_pages_locked
+++ a/mm/gup.c
@@ -2126,65 +2126,6 @@ long get_user_pages(unsigned long start,
}
EXPORT_SYMBOL(get_user_pages);
-/**
- * get_user_pages_locked() - variant of get_user_pages()
- *
- * @start: starting user address
- * @nr_pages: number of pages from start to pin
- * @gup_flags: flags modifying lookup behaviour
- * @pages: array that receives pointers to the pages pinned.
- * Should be at least nr_pages long. Or NULL, if caller
- * only intends to ensure the pages are faulted in.
- * @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.
- *
- * It is suitable to replace the form:
- *
- * mmap_read_lock(mm);
- * do_something()
- * get_user_pages(mm, ..., pages, NULL);
- * mmap_read_unlock(mm);
- *
- * to:
- *
- * int locked = 1;
- * mmap_read_lock(mm);
- * do_something()
- * get_user_pages_locked(mm, ..., pages, &locked);
- * if (locked)
- * mmap_read_unlock(mm);
- *
- * We can leverage the VM_FAULT_RETRY functionality in the page fault
- * paths better by using either get_user_pages_locked() or
- * get_user_pages_unlocked().
- *
- */
-long get_user_pages_locked(unsigned long start, unsigned long nr_pages,
- unsigned int gup_flags, struct page **pages,
- int *locked)
-{
- /*
- * FIXME: Current FOLL_LONGTERM behavior is incompatible with
- * FAULT_FLAG_ALLOW_RETRY because of the FS DAX check requirement on
- * vmas. As there are no users of this flag in this call we simply
- * disallow this option for now.
- */
- if (WARN_ON_ONCE(gup_flags & FOLL_LONGTERM))
- return -EINVAL;
- /*
- * FOLL_PIN must only be set internally by the pin_user_pages*() APIs,
- * never directly by the caller, so enforce that:
- */
- if (WARN_ON_ONCE(gup_flags & FOLL_PIN))
- return -EINVAL;
-
- return __get_user_pages_locked(current->mm, start, nr_pages,
- pages, NULL, locked,
- gup_flags | FOLL_TOUCH);
-}
-EXPORT_SYMBOL(get_user_pages_locked);
-
/*
* get_user_pages_unlocked() is suitable to replace the form:
*
_
Patches currently in -mm which might be from jhubbard@xxxxxxxxxx are
