sh: convert /proc/cpu/aligmnent, /proc/cpu/kernel_alignment to seq_file

[safe/jmp/linux-2.6] / fs / inode.c

diff --git a/fs/inode.c b/fs/inode.c
index 31168fd..4d8e3be 100644 (file)
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1461,34 +1461,37 @@ void file_update_time(struct file *file)
 {
        struct inode *inode = file->f_path.dentry->d_inode;
        struct timespec now;
-       int sync_it = 0;
-       int err;
+       enum { S_MTIME = 1, S_CTIME = 2, S_VERSION = 4 } sync_it = 0;
 
+       /* First try to exhaust all avenues to not sync */
        if (IS_NOCMTIME(inode))
                return;
 
-       err = mnt_want_write_file(file);
-       if (err)
-               return;
-
        now = current_fs_time(inode->i_sb);
-       if (!timespec_equal(&inode->i_mtime, &now)) {
-               inode->i_mtime = now;
-               sync_it = 1;
-       }
+       if (!timespec_equal(&inode->i_mtime, &now))
+               sync_it = S_MTIME;
 
-       if (!timespec_equal(&inode->i_ctime, &now)) {
-               inode->i_ctime = now;
-               sync_it = 1;
-       }
+       if (!timespec_equal(&inode->i_ctime, &now))
+               sync_it |= S_CTIME;
 
-       if (IS_I_VERSION(inode)) {
-               inode_inc_iversion(inode);
-               sync_it = 1;
-       }
+       if (IS_I_VERSION(inode))
+               sync_it |= S_VERSION;
 
-       if (sync_it)
-               mark_inode_dirty_sync(inode);
+       if (!sync_it)
+               return;
+
+       /* Finally allowed to write? Takes lock. */
+       if (mnt_want_write_file(file))
+               return;
+
+       /* Only change inode inside the lock region */
+       if (sync_it & S_VERSION)
+               inode_inc_iversion(inode);
+       if (sync_it & S_CTIME)
+               inode->i_ctime = now;
+       if (sync_it & S_MTIME)
+               inode->i_mtime = now;
+       mark_inode_dirty_sync(inode);
        mnt_drop_write(file->f_path.mnt);
 }
 EXPORT_SYMBOL(file_update_time);