From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 21 May 2010 14:56:12 +0000 (-0400)
Subject: simplify access to ecryptfs inodes in ->readpage() and friends
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bef5bc2464517cbbf8f85f09b5ade46904afec9a;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

simplify access to ecryptfs inodes in ->readpage() and friends

we can get to them from page->mapping->host, no need to mess with
file.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index 2ee9a3a7b68c..14e81c26c3ed 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -198,7 +198,7 @@ out:
 static int ecryptfs_readpage(struct file *file, struct page *page)
 {
 	struct ecryptfs_crypt_stat *crypt_stat =
-		&ecryptfs_inode_to_private(file->f_path.dentry->d_inode)->crypt_stat;
+		&ecryptfs_inode_to_private(page->mapping->host)->crypt_stat;
 	int rc = 0;
 
 	if (!crypt_stat
@@ -300,8 +300,7 @@ static int ecryptfs_write_begin(struct file *file,
 
 	if (!PageUptodate(page)) {
 		struct ecryptfs_crypt_stat *crypt_stat =
-			&ecryptfs_inode_to_private(
-				file->f_path.dentry->d_inode)->crypt_stat;
+			&ecryptfs_inode_to_private(mapping->host)->crypt_stat;
 
 		if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)
 		    || (crypt_stat->flags & ECRYPTFS_NEW_FILE)) {
@@ -487,7 +486,7 @@ static int ecryptfs_write_end(struct file *file,
 	unsigned to = from + copied;
 	struct inode *ecryptfs_inode = mapping->host;
 	struct ecryptfs_crypt_stat *crypt_stat =
-		&ecryptfs_inode_to_private(file->f_path.dentry->d_inode)->crypt_stat;
+		&ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat;
 	int rc;
 
 	if (crypt_stat->flags & ECRYPTFS_NEW_FILE) {