From 5a5e4c2eca0307deeb438c97dbdc608663515c0a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 30 May 2012 01:49:38 -0400 Subject: [PATCH] binfmt_elf: switch elf_map() to vm_mmap/vm_munmap No reason to hold ->mmap_sem over the sequence Signed-off-by: Al Viro --- fs/binfmt_elf.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index e658dd134b95..1b52956afe33 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -329,7 +329,6 @@ static unsigned long elf_map(struct file *filep, unsigned long addr, if (!size) return addr; - down_write(¤t->mm->mmap_sem); /* * total_size is the size of the ELF (interpreter) image. * The _first_ mmap needs to know the full size, otherwise @@ -340,13 +339,12 @@ static unsigned long elf_map(struct file *filep, unsigned long addr, */ if (total_size) { total_size = ELF_PAGEALIGN(total_size); - map_addr = do_mmap(filep, addr, total_size, prot, type, off); + map_addr = vm_mmap(filep, addr, total_size, prot, type, off); if (!BAD_ADDR(map_addr)) - do_munmap(current->mm, map_addr+size, total_size-size); + vm_munmap(map_addr+size, total_size-size); } else - map_addr = do_mmap(filep, addr, size, prot, type, off); + map_addr = vm_mmap(filep, addr, size, prot, type, off); - up_write(¤t->mm->mmap_sem); return(map_addr); }