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authorJes Sorensen <jes@sgi.com>2006-01-18 23:46:51 -0800
committerTony Luck <tony.luck@intel.com>2006-01-19 11:17:33 -0800
commit92ff2ecd0deddc4c5fb2140d5861d0ddd50e9e57 (patch)
tree3a0188cd0d3be4da5c8d2320d1de7b4b7cae11ba /arch/ia64/ia32
parent4b16bfbf8f8013fefb49592d030ff87651ab48cb (diff)
downloadop-kernel-dev-92ff2ecd0deddc4c5fb2140d5861d0ddd50e9e57.zip
op-kernel-dev-92ff2ecd0deddc4c5fb2140d5861d0ddd50e9e57.tar.gz
[IA64] sem2mutex: arch/ia64/ia32/sys_ia32.c
Migrate arch/ia64/ia32/sys_ia32 to using a mutex for mmap protection. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/ia32')
-rw-r--r--arch/ia64/ia32/sys_ia32.c28
1 files changed, 12 insertions, 16 deletions
diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
index 3945d37..70dba1f 100644
--- a/arch/ia64/ia32/sys_ia32.c
+++ b/arch/ia64/ia32/sys_ia32.c
@@ -52,9 +52,9 @@
#include <linux/compat.h>
#include <linux/vfs.h>
#include <linux/mman.h>
+#include <linux/mutex.h>
#include <asm/intrinsics.h>
-#include <asm/semaphore.h>
#include <asm/types.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
@@ -86,7 +86,7 @@
* while doing so.
*/
/* XXX make per-mm: */
-static DECLARE_MUTEX(ia32_mmap_sem);
+static DEFINE_MUTEX(ia32_mmap_mutex);
asmlinkage long
sys32_execve (char __user *name, compat_uptr_t __user *argv, compat_uptr_t __user *envp,
@@ -895,11 +895,11 @@ ia32_do_mmap (struct file *file, unsigned long addr, unsigned long len, int prot
prot = get_prot32(prot);
#if PAGE_SHIFT > IA32_PAGE_SHIFT
- down(&ia32_mmap_sem);
+ mutex_lock(&ia32_mmap_mutex);
{
addr = emulate_mmap(file, addr, len, prot, flags, offset);
}
- up(&ia32_mmap_sem);
+ mutex_unlock(&ia32_mmap_mutex);
#else
down_write(&current->mm->mmap_sem);
{
@@ -1000,11 +1000,9 @@ sys32_munmap (unsigned int start, unsigned int len)
if (start >= end)
return 0;
- down(&ia32_mmap_sem);
- {
- ret = sys_munmap(start, end - start);
- }
- up(&ia32_mmap_sem);
+ mutex_lock(&ia32_mmap_mutex);
+ ret = sys_munmap(start, end - start);
+ mutex_unlock(&ia32_mmap_mutex);
#endif
return ret;
}
@@ -1056,7 +1054,7 @@ sys32_mprotect (unsigned int start, unsigned int len, int prot)
if (retval < 0)
return retval;
- down(&ia32_mmap_sem);
+ mutex_lock(&ia32_mmap_mutex);
{
if (offset_in_page(start)) {
/* start address is 4KB aligned but not page aligned. */
@@ -1080,7 +1078,7 @@ sys32_mprotect (unsigned int start, unsigned int len, int prot)
retval = sys_mprotect(start, end - start, prot);
}
out:
- up(&ia32_mmap_sem);
+ mutex_unlock(&ia32_mmap_mutex);
return retval;
#endif
}
@@ -1124,11 +1122,9 @@ sys32_mremap (unsigned int addr, unsigned int old_len, unsigned int new_len,
old_len = PAGE_ALIGN(old_end) - addr;
new_len = PAGE_ALIGN(new_end) - addr;
- down(&ia32_mmap_sem);
- {
- ret = sys_mremap(addr, old_len, new_len, flags, new_addr);
- }
- up(&ia32_mmap_sem);
+ mutex_lock(&ia32_mmap_mutex);
+ ret = sys_mremap(addr, old_len, new_len, flags, new_addr);
+ mutex_unlock(&ia32_mmap_mutex);
if ((ret >= 0) && (old_len < new_len)) {
/* mremap expanded successfully */
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