diff options
| -rw-r--r-- | fs/proc/page.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/fs/proc/page.c b/fs/proc/page.c index 38dd88b7ce8..e73e911b7d0 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -12,6 +12,7 @@ #define KPMSIZE sizeof(u64) #define KPMMASK (KPMSIZE - 1) + /* /proc/kpagecount - an array exposing page counts * * Each entry is a u64 representing the corresponding @@ -33,20 +34,22 @@ static ssize_t kpagecount_read(struct file *file, char __user *buf, return -EINVAL; while (count > 0) { - ppage = NULL; if (pfn_valid(pfn)) ppage = pfn_to_page(pfn); - pfn++; + else + ppage = NULL; if (!ppage) pcount = 0; else pcount = page_mapcount(ppage); - if (put_user(pcount, out++)) { + if (put_user(pcount, out)) { ret = -EFAULT; break; } + pfn++; + out++; count -= KPMSIZE; } @@ -99,10 +102,10 @@ static ssize_t kpageflags_read(struct file *file, char __user *buf, return -EINVAL; while (count > 0) { - ppage = NULL; if (pfn_valid(pfn)) ppage = pfn_to_page(pfn); - pfn++; + else + ppage = NULL; if (!ppage) kflags = 0; else @@ -120,11 +123,13 @@ static ssize_t kpageflags_read(struct file *file, char __user *buf, kpf_copy_bit(kflags, KPF_RECLAIM, PG_reclaim) | kpf_copy_bit(kflags, KPF_BUDDY, PG_buddy); - if (put_user(uflags, out++)) { + if (put_user(uflags, out)) { ret = -EFAULT; break; } + pfn++; + out++; count -= KPMSIZE; } |