diff options
Diffstat (limited to 'fs/proc/page.c')
| -rw-r--r-- | fs/proc/page.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/proc/page.c b/fs/proc/page.c index 6d8e6a9e93a..e647c55275d 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -115,6 +115,15 @@ u64 stable_page_flags(struct page *page) u |= 1 << KPF_COMPOUND_TAIL; if (PageHuge(page)) u |= 1 << KPF_HUGE; + /* + * PageTransCompound can be true for non-huge compound pages (slab + * pages or pages allocated by drivers with __GFP_COMP) because it + * just checks PG_head/PG_tail, so we need to check PageLRU/PageAnon + * to make sure a given page is a thp, not a non-huge compound page. + */ + else if (PageTransCompound(page) && (PageLRU(compound_head(page)) || + PageAnon(compound_head(page)))) + u |= 1 << KPF_THP; /* * Caveats on high order pages: page->_count will only be set @@ -209,4 +218,4 @@ static int __init proc_page_init(void) proc_create("kpageflags", S_IRUSR, NULL, &proc_kpageflags_operations); return 0; } -module_init(proc_page_init); +fs_initcall(proc_page_init); |