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Groups > linux.kernel > #1723434

[PATCH 02/16] autofs4: switch autofs4_write to __kernel_write

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Instead of playing games with the address limit..

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 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(&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
 	 */
-- 
2.11.0

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switch in-kernel read/write calls to kernel_read/write Christoph Hellwig <hch@lst.de> - 2017-08-30 17:10 +0200
  [PATCH 08/16] mm/nommu: switch do_mmap_private to kernel_read Christoph Hellwig <hch@lst.de> - 2017-08-30 17:10 +0200
    Re: [PATCH 08/16] mm/nommu: switch do_mmap_private to kernel_read Al Viro <viro@ZenIV.linux.org.uk> - 2017-08-30 17:50 +0200
      Re: [PATCH 08/16] mm/nommu: switch do_mmap_private to kernel_read Christoph Hellwig <hch@lst.de> - 2017-09-01 12:50 +0200
  [PATCH 09/16] net/9p: switch p9_fd_read to kernel_write Christoph Hellwig <hch@lst.de> - 2017-08-30 17:10 +0200
  [PATCH 15/16] fs: unexport vfs_read and vfs_write Christoph Hellwig <hch@lst.de> - 2017-08-30 17:10 +0200
  [PATCH 02/16] autofs4: switch autofs4_write to __kernel_write Christoph Hellwig <hch@lst.de> - 2017-08-30 17:10 +0200
    Re: [PATCH 02/16] autofs4: switch autofs4_write to __kernel_write Al Viro <viro@ZenIV.linux.org.uk> - 2017-08-30 17:40 +0200
      Re: [PATCH 02/16] autofs4: switch autofs4_write to __kernel_write Christoph Hellwig <hch@lst.de> - 2017-09-01 12:30 +0200
  [PATCH 13/16] lustre: switch to kernel_write Christoph Hellwig <hch@lst.de> - 2017-08-30 17:10 +0200
  [PATCH 03/16] fs: move kernel_write to fs/read_write.c Christoph Hellwig <hch@lst.de> - 2017-08-30 17:10 +0200
  [PATCH 04/16] fs: move kernel_read to fs/read_write.c Christoph Hellwig <hch@lst.de> - 2017-08-30 17:10 +0200
  [PATCH 06/16] fs: fix kernel_write prototype Christoph Hellwig <hch@lst.de> - 2017-08-30 17:10 +0200
    Re: [PATCH 06/16] fs: fix kernel_write prototype Al Viro <viro@ZenIV.linux.org.uk> - 2017-08-30 17:40 +0200
      Re: [PATCH 06/16] fs: fix kernel_write prototype Christoph Hellwig <hch@lst.de> - 2017-09-01 12:50 +0200

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