diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2012-05-02 17:07:03 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-05-02 17:07:03 +0200 |
| commit | ced62c33fc434b9d44118c9f35803af8088cc3fe (patch) | |
| tree | 34d1145899e0e5853c4d5b45162f86bbe46941ea /mm/nommu.c | |
| parent | 3ff80abce7d0d3c1eacda53e73c94a57ade2e0a5 (diff) | |
| parent | 6838e601e6dc63440fd4315c1c2f3a2ef4ccdd6e (diff) | |
Merge tag 'imx-cleanup' of git://git.pengutronix.de/git/imx/linux-2.6 into next/cleanup
From: Sascha Hauer <s.hauer@pengutronix.de>
ARM: i.MX cleanups for 3.5
* tag 'imx-cleanup' of git://git.pengutronix.de/git/imx/linux-2.6: (5 commits)
ARM: mx53: fix pad definitions for MX53_PAD_EIM_D28__I2C1_SDA and MX53_PAD_GPIO_8__CAN1_RXCAN
ARM: imx/eukrea_mbimx27-baseboard: fix typo in error message
ARM: i.MX51 iomux: add missed definitions for SION-bit and mode for some pads
arm: imx: add missing select IMX_HAVE_PLATFORM for MACH_MX35_3DS in Kconfig
arm: imx: make various struct sys_timer static
Includes an update to 3.4-rc4
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index f59e170fceb..bb8f4f004a8 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1233,7 +1233,7 @@ enomem: /* * handle mapping creation for uClinux */ -unsigned long do_mmap_pgoff(struct file *file, +static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, unsigned long len, unsigned long prot, @@ -1470,7 +1470,32 @@ error_getting_region: show_free_areas(0); return -ENOMEM; } -EXPORT_SYMBOL(do_mmap_pgoff); + +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); +} +EXPORT_SYMBOL(do_mmap); + +unsigned long vm_mmap(struct file *file, unsigned long addr, + unsigned long len, unsigned long prot, + unsigned long flag, unsigned long offset) +{ + unsigned long ret; + struct mm_struct *mm = current->mm; + + down_write(&mm->mmap_sem); + ret = do_mmap(file, addr, len, prot, flag, offset); + up_write(&mm->mmap_sem); + return ret; +} +EXPORT_SYMBOL(vm_mmap); SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len, unsigned long, prot, unsigned long, flags, @@ -1709,16 +1734,22 @@ erase_whole_vma: } EXPORT_SYMBOL(do_munmap); -SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len) +int vm_munmap(unsigned long addr, size_t len) { - int ret; struct mm_struct *mm = current->mm; + int ret; down_write(&mm->mmap_sem); ret = do_munmap(mm, addr, len); up_write(&mm->mmap_sem); return ret; } +EXPORT_SYMBOL(vm_munmap); + +SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len) +{ + return vm_munmap(addr, len); +} /* * release all the mappings made in a process's VM space @@ -1744,7 +1775,7 @@ void exit_mmap(struct mm_struct *mm) kleave(""); } -unsigned long do_brk(unsigned long addr, unsigned long len) +unsigned long vm_brk(unsigned long addr, unsigned long len) { return -ENOMEM; } |
