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authorLi RongQing <roy.qing.li@gmail.com>2016-05-27 14:27:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-27 14:49:37 -0700
commit7cf7806ce1e30f1691cf340f70b807acbdf419ef (patch)
tree9fc7ae25996758104f7d0d7bef3fce80807689cf /mm/memcontrol.c
parentcbedbac3e66121ddbac363776c23119f8eaeefda (diff)
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: Li RongQing <roy.qing.li@gmail.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
-rw-r--r--mm/memcontrol.c37
1 files changed, 19 insertions, 18 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 485c688a7fa8..925b431f3f03 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -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 @@ out:
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)
{