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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>
zero-colors
Christoph Hellwig 2017-09-01 17:39:10 +02:00 committed by Al Viro
parent 8a2af06415
commit 317d5a5f0f
1 changed files with 1 additions and 8 deletions
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9
fs/autofs4/waitq.c
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@ -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
*/