diff mbox series

[RFC,4/5] file: add fput() cleanup helper

Message ID 20240719-work-mount-namespace-v1-4-834113cab0d2@kernel.org (mailing list archive)
State New
Headers show
Series nsfs: iterate through mount namespaces | expand

Commit Message

Christian Brauner July 19, 2024, 11:41 a.m. UTC 
Add a simple helper to put a file reference.

Signed-off-by: Christian Brauner <brauner@kernel.org>
---
 include/linux/file.h | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/include/linux/file.h b/include/linux/file.h
index 237931f20739..d1e768b06069 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -11,6 +11,7 @@ 
 #include <linux/posix_types.h>
 #include <linux/errno.h>
 #include <linux/cleanup.h>
+#include <linux/err.h>
 
 struct file;
 
@@ -96,6 +97,7 @@  extern void put_unused_fd(unsigned int fd);
 
 DEFINE_CLASS(get_unused_fd, int, if (_T >= 0) put_unused_fd(_T),
 	     get_unused_fd_flags(flags), unsigned flags)
+DEFINE_FREE(fput, struct file *, if (!IS_ERR_OR_NULL(_T)) fput(_T))
 
 /*
  * take_fd() will take care to set @fd to -EBADF ensuring that