From: Robert Love <rml@novell.com>
Date: Mon, 25 Jul 2005 19:08:37 +0000 (-0400)
Subject: [PATCH] inotify: use fget_light
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=33ea2f52b8758ef62ae4a9d2f91821c47d999ee9;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] inotify: use fget_light

As an optimization, use fget_light() and fput_light() where possible.

Signed-off-by: Robert Love <rml@novell.com>
Signed-off-by: John McCutchan <ttb@tentacle.dhs.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/inotify.c b/fs/inotify.c
index a87926584cd2..807209f0bcda 100644
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -923,10 +923,10 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
 	struct inotify_device *dev;
 	struct nameidata nd;
 	struct file *filp;
-	int ret;
+	int ret, fput_needed;
 
-	filp = fget(fd);
-	if (!filp)
+	filp = fget_light(fd, &fput_needed);
+	if (unlikely(!filp))
 		return -EBADF;
 
 	ret = find_inode(path, &nd);
@@ -973,7 +973,7 @@ out:
 	up(&dev->sem);
 	up(&inode->inotify_sem);
 fput_and_out:
-	fput(filp);
+	fput_light(filp, fput_needed);
 	return ret;
 }
 
@@ -981,14 +981,14 @@ asmlinkage long sys_inotify_rm_watch(int fd, u32 wd)
 {
 	struct file *filp;
 	struct inotify_device *dev;
-	int ret;
+	int ret, fput_needed;
 
-	filp = fget(fd);
-	if (!filp)
+	filp = fget_light(fd, &fput_needed);
+	if (unlikely(!filp))
 		return -EBADF;
 	dev = filp->private_data;
 	ret = inotify_ignore(dev, wd);
-	fput(filp);
+	fput_light(filp, fput_needed);
 
 	return ret;
 }