linux-toradex.git/mm/frame_vector.c, branch v4.10

mm: replace get_vaddr_frames() write/force parameters with gup_flags

2016-10-19T15:11:24+00:00

This removes the 'write' and 'force' from get_vaddr_frames() and
replaces them with 'gup_flags' to make the use of FOLL_FORCE explicit in
callers as use of this flag can result in surprising behaviour (and
hence bugs) within the mm subsystem.

Signed-off-by: Lorenzo Stoakes 
Acked-by: Michal Hocko 
Reviewed-by: Jan Kara 
Signed-off-by: Linus Torvalds

mm: replace get_user_pages_locked() write/force parameters with gup_flags

2016-10-19T15:11:05+00:00

This removes the 'write' and 'force' use from get_user_pages_locked()
and replaces them with 'gup_flags' to make the use of FOLL_FORCE
explicit in callers as use of this flag can result in surprising
behaviour (and hence bugs) within the mm subsystem.

Signed-off-by: Lorenzo Stoakes 
Acked-by: Michal Hocko 
Reviewed-by: Jan Kara 
Signed-off-by: Linus Torvalds

mm/gup: Switch all callers of get_user_pages() to not pass tsk/mm

2016-02-16T09:11:12+00:00

We will soon modify the vanilla get_user_pages() so it can no
longer be used on mm/tasks other than 'current/current->mm',
which is by far the most common way it is called.  For now,
we allow the old-style calls, but warn when they are used.
(implemented in previous patch)

This patch switches all callers of:

	get_user_pages()
	get_user_pages_unlocked()
	get_user_pages_locked()

to stop passing tsk/mm so they will no longer see the warnings.

Signed-off-by: Dave Hansen 
Reviewed-by: Thomas Gleixner 
Cc: Andrea Arcangeli 
Cc: Andrew Morton 
Cc: Andy Lutomirski 
Cc: Borislav Petkov 
Cc: Brian Gerst 
Cc: Dave Hansen 
Cc: Denys Vlasenko 
Cc: H. Peter Anvin 
Cc: Kirill A. Shutemov 
Cc: Linus Torvalds 
Cc: Naoya Horiguchi 
Cc: Peter Zijlstra 
Cc: Rik van Riel 
Cc: Srikar Dronamraju 
Cc: Vlastimil Babka 
Cc: jack@suse.cz
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20160212210156.113E9407@viggo.jf.intel.com
Signed-off-by: Ingo Molnar

mm: fix docbook comment for get_vaddr_frames()

2015-11-06T03:34:48+00:00

get_vaddr_frames() has a comment that's *almost* a docbook comment; add
the missing star so that the tools will find it properly.

Signed-off-by: Jonathan Corbet 
Cc: Jan Kara 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[media] mm: Provide new get_vaddr_frames() helper

2015-08-16T16:02:47+00:00

Provide new function get_vaddr_frames().  This function maps virtual
addresses from given start and fills given array with page frame numbers of
the corresponding pages. If given start belongs to a normal vma, the function
grabs reference to each of the pages to pin them in memory. If start
belongs to VM_IO | VM_PFNMAP vma, we don't touch page structures. Caller
must make sure pfns aren't reused for anything else while he is using
them.

This function is created for various drivers to simplify handling of
their buffers.

Signed-off-by: Jan Kara 
Acked-by: Mel Gorman 
Acked-by: Vlastimil Babka 
Acked-by: Andrew Morton 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab