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-rw-r--r--fs/binfmt_elf.c23
1 files changed, 6 insertions, 17 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 48ffb3d..16f7354 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -82,9 +82,7 @@ static int set_brk(unsigned long start, unsigned long end)
end = ELF_PAGEALIGN(end);
if (end > start) {
unsigned long addr;
- down_write(&current->mm->mmap_sem);
- addr = do_brk(start, end - start);
- up_write(&current->mm->mmap_sem);
+ addr = vm_brk(start, end - start);
if (BAD_ADDR(addr))
return addr;
}
@@ -514,9 +512,7 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
elf_bss = ELF_PAGESTART(elf_bss + ELF_MIN_ALIGN - 1);
/* Map the last of the bss segment */
- down_write(&current->mm->mmap_sem);
- error = do_brk(elf_bss, last_bss - elf_bss);
- up_write(&current->mm->mmap_sem);
+ error = vm_brk(elf_bss, last_bss - elf_bss);
if (BAD_ADDR(error))
goto out_close;
}
@@ -962,10 +958,8 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
and some applications "depend" upon this behavior.
Since we do not have the power to recompile these, we
emulate the SVr4 behavior. Sigh. */
- down_write(&current->mm->mmap_sem);
- error = do_mmap(NULL, 0, PAGE_SIZE, PROT_READ | PROT_EXEC,
+ error = vm_mmap(NULL, 0, PAGE_SIZE, PROT_READ | PROT_EXEC,
MAP_FIXED | MAP_PRIVATE, 0);
- up_write(&current->mm->mmap_sem);
}
#ifdef ELF_PLAT_INIT
@@ -1050,8 +1044,7 @@ static int load_elf_library(struct file *file)
eppnt++;
/* Now use mmap to map the library into memory. */
- down_write(&current->mm->mmap_sem);
- error = do_mmap(file,
+ error = vm_mmap(file,
ELF_PAGESTART(eppnt->p_vaddr),
(eppnt->p_filesz +
ELF_PAGEOFFSET(eppnt->p_vaddr)),
@@ -1059,7 +1052,6 @@ static int load_elf_library(struct file *file)
MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE,
(eppnt->p_offset -
ELF_PAGEOFFSET(eppnt->p_vaddr)));
- up_write(&current->mm->mmap_sem);
if (error != ELF_PAGESTART(eppnt->p_vaddr))
goto out_free_ph;
@@ -1072,11 +1064,8 @@ static int load_elf_library(struct file *file)
len = ELF_PAGESTART(eppnt->p_filesz + eppnt->p_vaddr +
ELF_MIN_ALIGN - 1);
bss = eppnt->p_memsz + eppnt->p_vaddr;
- if (bss > len) {
- down_write(&current->mm->mmap_sem);
- do_brk(len, bss - len);
- up_write(&current->mm->mmap_sem);
- }
+ if (bss > len)
+ vm_brk(len, bss - len);
error = 0;
out_free_ph:
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