Messages in this thread | | | From | David Laight <> | Subject | RE: [PATCH v3 2/4] mm: simplify compat_sys_move_pages | Date | Tue, 18 May 2021 20:49:34 +0000 |
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From: Arnd Bergmann > Sent: 17 May 2021 21:34 > > The compat move_pages() implementation uses compat_alloc_user_space() > for converting the pointer array. Moving the compat handling into > the function itself is a bit simpler and lets us avoid the > compat_alloc_user_space() call. > > Signed-off-by: Arnd Bergmann <arnd@arndb.de> > --- > mm/migrate.c | 45 ++++++++++++++++++++++++++++++--------------- > 1 file changed, 30 insertions(+), 15 deletions(-) > > diff --git a/mm/migrate.c b/mm/migrate.c > index b234c3f3acb7..a68d07f19a1a 100644 > --- a/mm/migrate.c > +++ b/mm/migrate.c > @@ -1855,6 +1855,23 @@ static void do_pages_stat_array(struct mm_struct *mm, unsigned long nr_pages, > mmap_read_unlock(mm); > } > > +static int put_compat_pages_array(const void __user *chunk_pages[], > + const void __user * __user *pages, > + unsigned long chunk_nr) > +{
Should that be get_compat_pages_array() ?
David
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