diff options
| author | Oleg Nesterov | 2015-09-09 15:39:29 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2015-09-10 13:29:01 -0700 |
| commit | 1fcfd8db7f82fa1f533a6f0e4155614ff4144d56 (patch) | |
| tree | 958b38ccd3bdd3bc97de154bf7bf322ff09637db /mm/nommu.c | |
| parent | 7cbea8dc0127a95226c7722a738ac6534950ef67 (diff) | |
mm, mpx: add "vm_flags_t vm_flags" arg to do_mmap_pgoff()
Add the additional "vm_flags_t vm_flags" argument to do_mmap_pgoff(),
rename it to do_mmap(), and re-introduce do_mmap_pgoff() as a simple
wrapper on top of do_mmap(). Perhaps we should update the callers of
do_mmap_pgoff() and kill it later.
This way mpx_mmap() can simply call do_mmap(vm_flags => VM_MPX) and do not
play with vm internals.
After this change mmap_region() has a single user outside of mmap.c,
arch/tile/mm/elf.c:arch_setup_additional_pages(). It would be nice to
change arch/tile/ and unexport mmap_region().
[kirill@shutemov.name: fix build]
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 1cc0709fcaa5..ab14a2014dea 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1233,18 +1233,19 @@ enomem: /* * handle mapping creation for uClinux */ -unsigned long do_mmap_pgoff(struct file *file, - unsigned long addr, - unsigned long len, - unsigned long prot, - unsigned long flags, - unsigned long pgoff, - unsigned long *populate) +unsigned long do_mmap(struct file *file, + unsigned long addr, + unsigned long len, + unsigned long prot, + unsigned long flags, + vm_flags_t vm_flags, + unsigned long pgoff, + unsigned long *populate) { struct vm_area_struct *vma; struct vm_region *region; struct rb_node *rb; - unsigned long capabilities, vm_flags, result; + unsigned long capabilities, result; int ret; *populate = 0; @@ -1262,7 +1263,7 @@ unsigned long do_mmap_pgoff(struct file *file, /* we've determined that we can make the mapping, now translate what we * now know into VMA flags */ - vm_flags = determine_vm_flags(file, prot, flags, capabilities); + vm_flags |= determine_vm_flags(file, prot, flags, capabilities); /* we're going to need to record the mapping */ region = kmem_cache_zalloc(vm_region_jar, GFP_KERNEL); |