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authorLinus Torvalds <torvalds@linux-foundation.org>2013-12-12 18:22:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-12-12 18:22:10 -0800
commit8d2763770c34e8ed771f0be86760eb4485febc05 (patch)
tree38ca3d44f84b8f575f3378c6be525e559bd314c1 /fs
parent54fb723cc48db2fde964fb9bb0eaaccf2cf31a9f (diff)
parent1f14c1ac19aa45118054b6d5425873c5c7fc23a1 (diff)
downloadlinux-8d2763770c34e8ed771f0be86760eb4485febc05.tar.bz2
Merge branch 'akpm' (fixes from Andrew)
Merge patches from Andrew Morton: "13 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm: memcg: do not allow task about to OOM kill to bypass the limit mm: memcg: fix race condition between memcg teardown and swapin thp: move preallocated PTE page table on move_huge_pmd() mfd/rtc: s5m: fix register updating by adding regmap for RTC rtc: s5m: enable IRQ wake during suspend rtc: s5m: limit endless loop waiting for register update rtc: s5m: fix unsuccesful IRQ request during probe drivers/rtc/rtc-s5m.c: fix info->rtc assignment include/linux/kernel.h: make might_fault() a nop for !MMU drivers/rtc/rtc-at91rm9200.c: correct alarm over day/month wrap procfs: also fix proc_reg_get_unmapped_area() for !MMU case mm: memcg: do not declare OOM from __GFP_NOFAIL allocations include/linux/hugetlb.h: make isolate_huge_page() an inline
Diffstat (limited to 'fs')
-rw-r--r--fs/proc/inode.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 28955d4b7218..124fc43c7090 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -292,16 +292,20 @@ proc_reg_get_unmapped_area(struct file *file, unsigned long orig_addr,
{
struct proc_dir_entry *pde = PDE(file_inode(file));
unsigned long rv = -EIO;
- unsigned long (*get_area)(struct file *, unsigned long, unsigned long,
- unsigned long, unsigned long) = NULL;
+
if (use_pde(pde)) {
+ typeof(proc_reg_get_unmapped_area) *get_area;
+
+ get_area = pde->proc_fops->get_unmapped_area;
#ifdef CONFIG_MMU
- get_area = current->mm->get_unmapped_area;
+ if (!get_area)
+ get_area = current->mm->get_unmapped_area;
#endif
- if (pde->proc_fops->get_unmapped_area)
- get_area = pde->proc_fops->get_unmapped_area;
+
if (get_area)
rv = get_area(file, orig_addr, len, pgoff, flags);
+ else
+ rv = orig_addr;
unuse_pde(pde);
}
return rv;