linux-kernel - [PATCH 07/17] orangefs: let setattr write to cached inode

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Message-Id: <20180917201054.3530-8-martin@omnibond.com>
Date:   Mon, 17 Sep 2018 20:10:44 +0000
From:   Martin Brandenburg <martin@...ibond.com>
To:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        devel@...ts.orangefs.org
Cc:     Martin Brandenburg <martin@...ibond.com>
Subject: [PATCH 07/17] orangefs: let setattr write to cached inode

This is a fairly big change, but ultimately it's not a lot of code.

Implement write_inode and then avoid the call to orangefs_inode_setattr
within orangefs_setattr.

Signed-off-by: Martin Brandenburg <martin@...ibond.com>
---
 fs/orangefs/inode.c | 11 +++--------
 fs/orangefs/super.c | 16 ++++++++++++++++
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c
index ec3996a61f92..b16b11294573 100644
--- a/fs/orangefs/inode.c
+++ b/fs/orangefs/inode.c
@@ -207,8 +207,8 @@ static int orangefs_setattr_size(struct inode *inode, struct iattr *iattr)
  */
 int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
 {
-	int ret = -EINVAL;
 	struct inode *inode = dentry->d_inode;
+	int ret;
 
 	gossip_debug(GOSSIP_INODE_DEBUG,
 		"%s: called on %pd\n",
@@ -228,16 +228,11 @@ int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
 	setattr_copy(inode, iattr);
 	mark_inode_dirty(inode);
 
-	ret = orangefs_inode_setattr(inode, iattr);
-	gossip_debug(GOSSIP_INODE_DEBUG,
-		"%s: orangefs_inode_setattr returned %d\n",
-		__func__,
-		ret);
-
-	if (!ret && (iattr->ia_valid & ATTR_MODE))
+	if (iattr->ia_valid & ATTR_MODE)
 		/* change mod on a file that has ACLs */
 		ret = posix_acl_chmod(inode, inode->i_mode);
 
+	ret = 0;
 out:
 	gossip_debug(GOSSIP_INODE_DEBUG, "%s: ret:%d:\n", __func__, ret);
 	return ret;
diff --git a/fs/orangefs/super.c b/fs/orangefs/super.c
index 61bec955b285..788869c8233b 100644
--- a/fs/orangefs/super.c
+++ b/fs/orangefs/super.c
@@ -151,6 +151,21 @@ static void orangefs_destroy_inode(struct inode *inode)
 	call_rcu(&inode->i_rcu, orangefs_i_callback);
 }
 
+int orangefs_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+	struct iattr iattr;
+	gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_write_inode\n");
+	iattr.ia_valid = ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_ATIME |
+	    ATTR_ATIME_SET | ATTR_MTIME | ATTR_MTIME_SET | ATTR_CTIME;
+	iattr.ia_mode = inode->i_mode;
+	iattr.ia_uid = inode->i_uid;
+	iattr.ia_gid = inode->i_gid;
+	iattr.ia_atime = inode->i_atime;
+	iattr.ia_mtime = inode->i_mtime;
+	iattr.ia_ctime = inode->i_ctime;
+	return orangefs_inode_setattr(inode, &iattr);
+}
+
 /*
  * NOTE: information filled in here is typically reflected in the
  * output of the system command 'df'
@@ -309,6 +324,7 @@ void fsid_key_table_finalize(void)
 static const struct super_operations orangefs_s_ops = {
 	.alloc_inode = orangefs_alloc_inode,
 	.destroy_inode = orangefs_destroy_inode,
+	.write_inode = orangefs_write_inode,
 	.drop_inode = generic_delete_inode,
 	.statfs = orangefs_statfs,
 	.remount_fs = orangefs_remount_fs,
-- 
2.19.0