From: Jan Kara <jack@suse.cz>
Date: Tue, 8 Aug 2017 07:54:36 +0000 (+0200)
Subject: fs: Provide __inode_get_bytes()
X-Git-Tag: v4.14-rc1~103^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f4a8116a4c8c8f754d0ec1498a2ba4b63d114e6a;p=platform%2Fkernel%2Flinux-exynos.git

fs: Provide __inode_get_bytes()

Provide helper __inode_get_bytes() which assumes i_lock is already
acquired. Quota code will need this to be able to use i_lock to protect
consistency of quota accounting information and inode usage.

Signed-off-by: Jan Kara <jack@suse.cz>
---

diff --git a/fs/stat.c b/fs/stat.c
index c356108..8a6aa8c 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -710,7 +710,7 @@ loff_t inode_get_bytes(struct inode *inode)
 	loff_t ret;
 
 	spin_lock(&inode->i_lock);
-	ret = (((loff_t)inode->i_blocks) << 9) + inode->i_bytes;
+	ret = __inode_get_bytes(inode);
 	spin_unlock(&inode->i_lock);
 	return ret;
 }
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 6e1fd5d..d6e9ab7 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2998,6 +2998,10 @@ void __inode_add_bytes(struct inode *inode, loff_t bytes);
 void inode_add_bytes(struct inode *inode, loff_t bytes);
 void __inode_sub_bytes(struct inode *inode, loff_t bytes);
 void inode_sub_bytes(struct inode *inode, loff_t bytes);
+static inline loff_t __inode_get_bytes(struct inode *inode)
+{
+	return (((loff_t)inode->i_blocks) << 9) + inode->i_bytes;
+}
 loff_t inode_get_bytes(struct inode *inode);
 void inode_set_bytes(struct inode *inode, loff_t bytes);
 const char *simple_get_link(struct dentry *, struct inode *,