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Commit 7cf7806c authored by Li RongQing's avatar Li RongQing Committed by Linus Torvalds
Browse files

mm/memcontrol.c: move comments for get_mctgt_type() to proper position 

Move the comments for get_mctgt_type() to be before get_mctgt_type()
implementation.

Link: http://lkml.kernel.org/r/1463644638-7446-1-git-send-email-roy.qing.li@gmail.com


Signed-off-by: default avatarLi RongQing <roy.qing.li@gmail.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent cbedbac3

mm/memcontrol.c

+19 −18
Original line number Diff line number Diff line
@@ -4309,24 +4309,6 @@ static int mem_cgroup_do_precharge(unsigned long count) 
	return 0;

}



/**

 * get_mctgt_type - get target type of moving charge

 * @vma: the vma the pte to be checked belongs

 * @addr: the address corresponding to the pte to be checked

 * @ptent: the pte to be checked

 * @target: the pointer the target page or swap ent will be stored(can be NULL)

 *

 * Returns

 *   0(MC_TARGET_NONE): if the pte is not a target for move charge.

 *   1(MC_TARGET_PAGE): if the page corresponding to this pte is a target for

 *     move charge. if @target is not NULL, the page is stored in target->page

 *     with extra refcnt got(Callers should handle it).

 *   2(MC_TARGET_SWAP): if the swap entry corresponding to this pte is a

 *     target for charge migration. if @target is not NULL, the entry is stored

 *     in target->ent.

 *

 * Called with pte lock held.

 */

union mc_target {

	struct page	*page;

	swp_entry_t	ent;
@@ -4515,6 +4497,25 @@ static int mem_cgroup_move_account(struct page *page, 
	return ret;

}



/**

 * get_mctgt_type - get target type of moving charge

 * @vma: the vma the pte to be checked belongs

 * @addr: the address corresponding to the pte to be checked

 * @ptent: the pte to be checked

 * @target: the pointer the target page or swap ent will be stored(can be NULL)

 *

 * Returns

 *   0(MC_TARGET_NONE): if the pte is not a target for move charge.

 *   1(MC_TARGET_PAGE): if the page corresponding to this pte is a target for

 *     move charge. if @target is not NULL, the page is stored in target->page

 *     with extra refcnt got(Callers should handle it).

 *   2(MC_TARGET_SWAP): if the swap entry corresponding to this pte is a

 *     target for charge migration. if @target is not NULL, the entry is stored

 *     in target->ent.

 *

 * Called with pte lock held.

 */



static enum mc_target_type get_mctgt_type(struct vm_area_struct *vma,

		unsigned long addr, pte_t ptent, union mc_target *target)

{