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

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This removes the 'write' and 'force' from get_user_pages() 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 <[email protected]>
Acked-by: Christian König <[email protected]>
Acked-by: Jesper Nilsson <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Lorenzo Stoakes 2016-10-13 01:20:16 +01:00 • committed by Linus Torvalds
commit 768ae309a9
22 changed files with 49 additions and 54 deletions
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4
arch/cris/arch-v32/drivers/cryptocop.c
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@ -2722,7 +2722,6 @@ static int cryptocop_ioctl_process(struct inode *inode, struct file *filp, unsig
err = get_user_pages((unsigned long int)(oper.indata + prev_ix),
noinpages,
0, /* read access only for in data */
0, /* no force */
inpages,
NULL);
@ -2736,8 +2735,7 @@ static int cryptocop_ioctl_process(struct inode *inode, struct file *filp, unsig
if (oper.do_cipher){
err = get_user_pages((unsigned long int)oper.cipher_outdata,
nooutpages,
1, /* write access for out data */
0, /* no force */
FOLL_WRITE, /* write access for out data */
outpages,
NULL);
up_read(&current->mm->mmap_sem);