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linux-sg2042
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kill do_mmap() completely 

just pull into vm_mmap()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-05-30 20:11:57 -04:00
parent e3fc629d7b
commit dc982501d9
2 changed files with 12 additions and 24 deletions
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18
mm/mmap.c
View File

@ -1102,17 +1102,6 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
return mmap_region(file, addr, len, flags, vm_flags, pgoff);
}
static unsigned long do_mmap(struct file *file, unsigned long addr,
unsigned long len, unsigned long prot,
unsigned long flag, unsigned long offset)
{
if (unlikely(offset + PAGE_ALIGN(len) < offset))
return -EINVAL;
if (unlikely(offset & ~PAGE_MASK))
return -EINVAL;
return do_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT);
}
unsigned long vm_mmap(struct file *file, unsigned long addr,
unsigned long len, unsigned long prot,
unsigned long flag, unsigned long offset)
@ -1120,10 +1109,15 @@ unsigned long vm_mmap(struct file *file, unsigned long addr,
unsigned long ret;
struct mm_struct *mm = current->mm;
if (unlikely(offset + PAGE_ALIGN(len) < offset))
return -EINVAL;
if (unlikely(offset & ~PAGE_MASK))
return -EINVAL;
ret = security_mmap_file(file, prot, flag);
if (!ret) {
down_write(&mm->mmap_sem);
ret = do_mmap(file, addr, len, prot, flag, offset);
ret = do_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT);
up_write(&mm->mmap_sem);
}
return ret;

18
mm/nommu.c
View File

@ -1470,17 +1470,6 @@ error_getting_region:
return -ENOMEM;
}
static unsigned long do_mmap(struct file *file, unsigned long addr,
unsigned long len, unsigned long prot,
unsigned long flag, unsigned long offset)
{
if (unlikely(offset + PAGE_ALIGN(len) < offset))
return -EINVAL;
if (unlikely(offset & ~PAGE_MASK))
return -EINVAL;
return do_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT);
}
unsigned long vm_mmap(struct file *file, unsigned long addr,
unsigned long len, unsigned long prot,
unsigned long flag, unsigned long offset)
@ -1488,10 +1477,15 @@ unsigned long vm_mmap(struct file *file, unsigned long addr,
unsigned long ret;
struct mm_struct *mm = current->mm;
if (unlikely(offset + PAGE_ALIGN(len) < offset))
return -EINVAL;
if (unlikely(offset & ~PAGE_MASK))
return -EINVAL;
ret = security_mmap_file(file, prot, flag);
if (!ret) {
down_write(&mm->mmap_sem);
ret = do_mmap(file, addr, len, prot, flag, offset);
ret = do_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT);
up_write(&mm->mmap_sem);
}
return ret;