[RFC][PATCH 07/42] create_pipe_files(): use fput() if allocation of the second file fails

From: Al Viro
Date: Tue Jul 10 2018 - 22:26:07 EST


From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

... just use put_pipe_info() to get the pipe->files down to 1 and let
fput()-called pipe_release() do freeing.

Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---
fs/pipe.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/fs/pipe.c b/fs/pipe.c
index bb0840e234f3..9405e455f5b1 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -771,8 +771,9 @@ int create_pipe_files(struct file **res, int flags)

res[0] = alloc_file(&path, FMODE_READ, &pipefifo_fops);
if (IS_ERR(res[0])) {
- err = PTR_ERR(res[0]);
- goto err_file;
+ put_pipe_info(inode, inode->i_pipe);
+ fput(f);
+ return PTR_ERR(res[0]);
}

path_get(&path);
@@ -781,8 +782,6 @@ int create_pipe_files(struct file **res, int flags)
res[1] = f;
return 0;

-err_file:
- put_filp(f);
err_dentry:
free_pipe_info(inode->i_pipe);
path_put(&path);
--
2.11.0