Commit 87aa7529 authored by Yang Shi's avatar Yang Shi Committed by Linus Torvalds

mm: thp: inc counter for collapsed shmem THP

/sys/kernel/mm/transparent_hugepage/khugepaged/pages_collapsed is used
to record the counter of collapsed THP, but it just gets inc'ed in
anonymous THP collapse path, do this for shmem THP collapse too.

Link: http://lkml.kernel.org/r/1529622949-75504-2-git-send-email-yang.shi@linux.alibaba.comSigned-off-by: default avatarYang Shi <yang.shi@linux.alibaba.com>
Acked-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c2231020
...@@ -1516,6 +1516,8 @@ static void collapse_shmem(struct mm_struct *mm, ...@@ -1516,6 +1516,8 @@ static void collapse_shmem(struct mm_struct *mm,
unlock_page(new_page); unlock_page(new_page);
*hpage = NULL; *hpage = NULL;
khugepaged_pages_collapsed++;
} else { } else {
/* Something went wrong: rollback changes to the radix-tree */ /* Something went wrong: rollback changes to the radix-tree */
shmem_uncharge(mapping->host, nr_none); shmem_uncharge(mapping->host, nr_none);
......
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