16 Feb, 2016
1 commit
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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
06 Nov, 2015
1 commit
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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
17 Aug, 2015
1 commit
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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
