Merge branch 'akpm' (incoming from Andrew)

Merge misc fixes from Andrew Morton:
 "13 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  agp: info leak in agpioc_info_wrap()
  fs/affs/super.c: bugfix / double free
  fanotify: fix -EOVERFLOW with large files on 64-bit
  slub: use sysfs'es release mechanism for kmem_cache
  revert "mm: vmscan: do not swap anon pages just because free+file is low"
  autofs: fix lockref lookup
  mm: filemap: update find_get_pages_tag() to deal with shadow entries
  mm/compaction: make isolate_freepages start at pageblock boundary
  MAINTAINERS: zswap/zbud: change maintainer email address
  mm/page-writeback.c: fix divide by zero in pos_ratio_polynom
  hugetlb: ensure hugepage access is denied if hugepages are not supported
  slub: fix memcg_propagate_slab_attrs
  drivers/rtc/rtc-pcf8523.c: fix month definition

4 files changed, 9 insertions, 4 deletions

diff --git a/fs/affs/super.c b/fs/affs/super.c
index 6d589f28bf9b..895ac7dc9dbf 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -340,8 +340,6 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
                                 &blocksize,&sbi->s_prefix,
                                 sbi->s_volume, &mount_flags)) {
                 printk(KERN_ERR "AFFS: Error parsing options\n");
-                kfree(sbi->s_prefix);
-                kfree(sbi);
                 return -EINVAL;
         }
         /* N.B. after this point s_prefix must be released */
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 2caf36ac3e93..cc87c1abac97 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -179,7 +179,7 @@ static struct dentry *autofs4_lookup_active(struct dentry *dentry)
                 spin_lock(&active->d_lock);
 
                 /* Already gone? */
-                if (!d_count(active))
+                if ((int) d_count(active) <= 0)
                         goto next;
 
                 qstr = &active->d_name;
@@ -230,7 +230,7 @@ static struct dentry *autofs4_lookup_expiring(struct dentry *dentry)
 
                 spin_lock(&expiring->d_lock);
 
-                /* Bad luck, we've already been dentry_iput */
+                /* We've already been dentry_iput or unlinked */
                 if (!expiring->d_inode)
                         goto next;
 
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 204027520937..e19d4c0cacae 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -1030,6 +1030,11 @@ static int __init init_hugetlbfs_fs(void)
         int error;
         int i;
 
+        if (!hugepages_supported()) {
+                pr_info("hugetlbfs: disabling because there are no supported hugepage sizes\n");
+                return -ENOTSUPP;
+        }
+
         error = bdi_init(&hugetlbfs_backing_dev_info);
         if (error)
                 return error;
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 4e565c814309..732648b270dc 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -698,6 +698,8 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags)
         }
         group->overflow_event = &oevent->fse;
 
+        if (force_o_largefile())
+                event_f_flags |= O_LARGEFILE;
         group->fanotify_data.f_flags = event_f_flags;
 #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
         spin_lock_init(&group->fanotify_data.access_lock);