autofs4: switch autofs4_write to __kernel_write

Instead of playing games with the address limit..

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 24a58bf9ca72ce3b51f1188162594654de1c4f82..4ac49d038bf38f3745888e82214491e64aa6da9a 100644 (file)
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -56,19 +56,14 @@ static int autofs4_write(struct autofs_sb_info *sbi,
                         struct file *file, const void *addr, int bytes)
 {
        unsigned long sigpipe, flags;
-       mm_segment_t fs;
        const char *data = (const char *)addr;
        ssize_t wr = 0;
 
        sigpipe = sigismember(&current->pending.signal, SIGPIPE);
 
-       /* Save pointer to user space and point back to kernel space */
-       fs = get_fs();
-       set_fs(KERNEL_DS);
-
        mutex_lock(&sbi->pipe_mutex);
        while (bytes) {
-               wr = __vfs_write(file, data, bytes, &file->f_pos);
+               wr = __kernel_write(file, data, bytes, &file->f_pos);
                if (wr <= 0)
                        break;
                data += wr;
@@ -76,8 +71,6 @@ static int autofs4_write(struct autofs_sb_info *sbi,
        }
        mutex_unlock(&sbi->pipe_mutex);
 
-       set_fs(fs);
-
        /* Keep the currently executing process from receiving a
         * SIGPIPE unless it was already supposed to get one
         */