linux-kernel - [PATCH 5/6] fs: Make alloc

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Date:	Thu, 12 Mar 2015 18:40:54 -0700
From:	Josh Triplett <josh@...htriplett.org>
To:	Al Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andy Lutomirski <luto@...capital.net>,
	Ingo Molnar <mingo@...hat.com>,
	Kees Cook <keescook@...omium.org>,
	Oleg Nesterov <oleg@...hat.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	"H. Peter Anvin" <hpa@...or.com>, Rik van Riel <riel@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Thiago Macieira <thiago.macieira@...el.com>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, x86@...nel.org
Subject: [PATCH 5/6] fs: Make alloc_fd non-private

This allows callers to allocate a file descriptor with a defined minimum
value, without directly calling the lower-level __alloc_fd.

Signed-off-by: Josh Triplett <josh@...htriplett.org>
Signed-off-by: Thiago Macieira <thiago.macieira@...el.com>
---
 fs/file.c            | 2 +-
 include/linux/file.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/file.c b/fs/file.c
index ee738ea..583ba46 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -500,7 +500,7 @@ out:
 	return error;
 }
 
-static int alloc_fd(unsigned start, unsigned flags)
+int alloc_fd(unsigned start, unsigned flags)
 {
 	return __alloc_fd(current->files, start, rlimit(RLIMIT_NOFILE), flags);
 }
diff --git a/include/linux/file.h b/include/linux/file.h
index f87d308..d49f3bd 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -65,6 +65,7 @@ extern int replace_fd(unsigned fd, struct file *file, unsigned flags);
 extern void set_close_on_exec(unsigned int fd, int flag);
 extern bool get_close_on_exec(unsigned int fd);
 extern void put_filp(struct file *);
+extern int alloc_fd(unsigned start, unsigned flags);
 extern int get_unused_fd_flags(unsigned flags);
 extern void put_unused_fd(unsigned int fd);
 
-- 
2.1.4

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