I added IS_NOATIME(inode) macro definition in include/linux/fs.h, true if the 
inode superblock is marked readonly or noatime.

This new macro is then used in touch_atime() instead of separatly testing 
MS_RDONLY and MS_NOATIME

Signed-off-by: Eric Dumazet <[EMAIL PROTECTED]>
--- linux-2.6.20-rc1-mm1/fs/inode.c     2006-12-14 02:14:23.000000000 +0100
+++ linux-2.6.20-rc1-mm1-ed/fs/inode.c  2006-12-15 20:14:31.000000000 +0100
@@ -1160,11 +1160,9 @@ void touch_atime(struct vfsmount *mnt, s
        struct inode *inode = dentry->d_inode;
        struct timespec now;
 
-       if (IS_RDONLY(inode))
-               return;
        if (inode->i_flags & S_NOATIME)
                return;
-       if (inode->i_sb->s_flags & MS_NOATIME)
+       if (IS_NOATIME(inode))
                return;
        if ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))
                return;
--- linux-2.6.20-rc1-mm1/include/linux/fs.h     2006-12-15 15:46:16.000000000 
+0100
+++ linux-2.6.20-rc1-mm1-ed/include/linux/fs.h  2006-12-15 20:16:13.000000000 
+0100
@@ -169,6 +169,7 @@ extern int dir_notify_enable;
 #define IS_DIRSYNC(inode)      (__IS_FLG(inode, MS_SYNCHRONOUS|MS_DIRSYNC) || \
                                        ((inode)->i_flags & (S_SYNC|S_DIRSYNC)))
 #define IS_MANDLOCK(inode)     __IS_FLG(inode, MS_MANDLOCK)
+#define IS_NOATIME(inode)   __IS_FLG(inode, MS_RDONLY|MS_NOATIME)
 
 #define IS_NOQUOTA(inode)      ((inode)->i_flags & S_NOQUOTA)
 #define IS_APPEND(inode)       ((inode)->i_flags & S_APPEND)

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