[PATCH 02/16] autofs4: switch autofs4_write to __kernel_write
From: Christoph Hellwig
Date: Wed Aug 30 2017 - 11:04:26 EST
Instead of playing games with the address limit..
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
fs/autofs4/waitq.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 24a58bf9ca72..4ac49d038bf3 100644
--- 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(¤t->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
*/
--
2.11.0