fbdev: add mutex for fb_mmap locking

[safe/jmp/linux-2.6] / include / linux / fb.h

diff --git a/include/linux/fb.h b/include/linux/fb.h
index dd68358..f847df9 100644 (file)
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -819,6 +819,7 @@ struct fb_info {
        int node;
        int flags;
        struct mutex lock;              /* Lock for open/release/ioctl funcs */
+       struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
        struct fb_var_screeninfo var;   /* Current var */
        struct fb_fix_screeninfo fix;   /* Current fix */
        struct fb_monspecs monspecs;    /* Current Monitor specs */