From 5955102c9984fa081b2d570cfac75c97eecf8f3b Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 22 Jan 2016 15:40:57 -0500
Subject: wrappers for ->i_mutex access

parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
inode_foo(inode) being mutex_foo(&inode->i_mutex).

Please, use those for access to ->i_mutex; over the coming cycle
->i_mutex will become rwsem, with ->lookup() done with it held
only shared.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/fat/dir.c  |  4 ++--
 fs/fat/file.c | 12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)

(limited to 'fs/fat')

diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index 7def96caec5f..d0b95c95079b 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -769,7 +769,7 @@ static int fat_ioctl_readdir(struct inode *inode, struct file *file,
 
 	buf.dirent = dirent;
 	buf.result = 0;
-	mutex_lock(&inode->i_mutex);
+	inode_lock(inode);
 	buf.ctx.pos = file->f_pos;
 	ret = -ENOENT;
 	if (!IS_DEADDIR(inode)) {
@@ -777,7 +777,7 @@ static int fat_ioctl_readdir(struct inode *inode, struct file *file,
 				    short_only, both ? &buf : NULL);
 		file->f_pos = buf.ctx.pos;
 	}
-	mutex_unlock(&inode->i_mutex);
+	inode_unlock(inode);
 	if (ret >= 0)
 		ret = buf.result;
 	return ret;
diff --git a/fs/fat/file.c b/fs/fat/file.c
index 43d3475da83a..f70185668832 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -24,9 +24,9 @@ static int fat_ioctl_get_attributes(struct inode *inode, u32 __user *user_attr)
 {
 	u32 attr;
 
-	mutex_lock(&inode->i_mutex);
+	inode_lock(inode);
 	attr = fat_make_attrs(inode);
-	mutex_unlock(&inode->i_mutex);
+	inode_unlock(inode);
 
 	return put_user(attr, user_attr);
 }
@@ -47,7 +47,7 @@ static int fat_ioctl_set_attributes(struct file *file, u32 __user *user_attr)
 	err = mnt_want_write_file(file);
 	if (err)
 		goto out;
-	mutex_lock(&inode->i_mutex);
+	inode_lock(inode);
 
 	/*
 	 * ATTR_VOLUME and ATTR_DIR cannot be changed; this also
@@ -109,7 +109,7 @@ static int fat_ioctl_set_attributes(struct file *file, u32 __user *user_attr)
 	fat_save_attrs(inode, attr);
 	mark_inode_dirty(inode);
 out_unlock_inode:
-	mutex_unlock(&inode->i_mutex);
+	inode_unlock(inode);
 	mnt_drop_write_file(file);
 out:
 	return err;
@@ -246,7 +246,7 @@ static long fat_fallocate(struct file *file, int mode,
 	if (!S_ISREG(inode->i_mode))
 		return -EOPNOTSUPP;
 
-	mutex_lock(&inode->i_mutex);
+	inode_lock(inode);
 	if (mode & FALLOC_FL_KEEP_SIZE) {
 		ondisksize = inode->i_blocks << 9;
 		if ((offset + len) <= ondisksize)
@@ -272,7 +272,7 @@ static long fat_fallocate(struct file *file, int mode,
 	}
 
 error:
-	mutex_unlock(&inode->i_mutex);
+	inode_unlock(inode);
 	return err;
 }
 
-- 
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