linux-kernel - [PATCH v2 17/17] cifs: remove some unneeded mapping_set

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Date:   Wed, 12 Apr 2017 08:06:14 -0400
From:   Jeff Layton <jlayton@...hat.com>
To:     linux-fsdevel@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
        tytso@....edu, jack@...e.cz, willy@...radead.org, neilb@...e.com,
        viro@...iv.linux.org.uk
Subject: [PATCH v2 17/17] cifs: remove some unneeded mapping_set_error calls

Now that writeback errors are handled on a per-file basis using the new
sequence counter method at the vfs layer, we no longer need to re-set
errors in the mapping after doing writeback in non-fsync codepaths.

Signed-off-by: Jeff Layton <jlayton@...hat.com>
---
 fs/cifs/cifsfs.c | 4 +---
 fs/cifs/file.c   | 4 +---
 fs/cifs/inode.c  | 6 ++----
 3 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index dd3f5fabfdf6..017a2d1d02c7 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -829,10 +829,8 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int whence)
 		if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping &&
 		    inode->i_mapping->nrpages != 0) {
 			rc = filemap_fdatawait(inode->i_mapping);
-			if (rc) {
-				mapping_set_error(inode->i_mapping, rc);
+			if (rc)
 				return rc;
-			}
 		}
 		/*
 		 * Some applications poll for the file length in this strange
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index d9a3657b8d43..563c298c2a2a 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -722,9 +722,7 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
 	cinode = CIFS_I(inode);
 
 	if (can_flush) {
-		rc = filemap_write_and_wait(inode->i_mapping);
-		mapping_set_error(inode->i_mapping, rc);
-
+		filemap_write_and_wait(inode->i_mapping);
 		if (tcon->unix_ext)
 			rc = cifs_get_inode_info_unix(&inode, full_path,
 						      inode->i_sb, xid);
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index b261db34103c..f789d44d4b73 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -2178,8 +2178,7 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
 	 * will be truncated anyway? Also, should we error out here if
 	 * the flush returns error?
 	 */
-	rc = filemap_write_and_wait(inode->i_mapping);
-	mapping_set_error(inode->i_mapping, rc);
+	filemap_write_and_wait(inode->i_mapping);
 	rc = 0;
 
 	if (attrs->ia_valid & ATTR_SIZE) {
@@ -2321,8 +2320,7 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
 	 * will be truncated anyway? Also, should we error out here if
 	 * the flush returns error?
 	 */
-	rc = filemap_write_and_wait(inode->i_mapping);
-	mapping_set_error(inode->i_mapping, rc);
+	filemap_write_and_wait(inode->i_mapping);
 	rc = 0;
 
 	if (attrs->ia_valid & ATTR_SIZE) {
-- 
2.9.3