Patch "nfsd: use DEFINE_SHOW_ATTRIBUTE to define export_features_fops and supported_enctypes_fops" has been added to the 5.10-stable tree

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This is a note to let you know that I've just added the patch titled

    nfsd: use DEFINE_SHOW_ATTRIBUTE to define export_features_fops and supported_enctypes_fops

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     nfsd-use-define_show_attribute-to-define-export_feat.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit cb957d7fcd70e9028b150ac36a09f8567601902b
Author: ChenXiaoSong <chenxiaosong2@xxxxxxxxxx>
Date:   Fri Sep 23 00:31:53 2022 +0800

    nfsd: use DEFINE_SHOW_ATTRIBUTE to define export_features_fops and supported_enctypes_fops
    
    [ Upstream commit 9beeaab8e05d353d709103cafa1941714b4d5d94 ]
    
    Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
    
    Signed-off-by: ChenXiaoSong <chenxiaosong2@xxxxxxxxxx>
    [ cel: reduce line length ]
    Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 597a26ad4183f..3ed0cfdb0c0b5 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -185,17 +185,7 @@ static int export_features_show(struct seq_file *m, void *v)
 	return 0;
 }
 
-static int export_features_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, export_features_show, NULL);
-}
-
-static const struct file_operations export_features_operations = {
-	.open		= export_features_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(export_features);
 
 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
 static int supported_enctypes_show(struct seq_file *m, void *v)
@@ -204,17 +194,7 @@ static int supported_enctypes_show(struct seq_file *m, void *v)
 	return 0;
 }
 
-static int supported_enctypes_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, supported_enctypes_show, NULL);
-}
-
-static const struct file_operations supported_enctypes_ops = {
-	.open		= supported_enctypes_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(supported_enctypes);
 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
 
 static const struct file_operations pool_stats_operations = {
@@ -1365,7 +1345,7 @@ static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc)
 		/* Per-export io stats use same ops as exports file */
 		[NFSD_Export_Stats] = {"export_stats", &exports_nfsd_operations, S_IRUGO},
 		[NFSD_Export_features] = {"export_features",
-					&export_features_operations, S_IRUGO},
+					&export_features_fops, S_IRUGO},
 		[NFSD_FO_UnlockIP] = {"unlock_ip",
 					&transaction_ops, S_IWUSR|S_IRUSR},
 		[NFSD_FO_UnlockFS] = {"unlock_filesystem",
@@ -1381,7 +1361,8 @@ static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc)
 		[NFSD_MaxConnections] = {"max_connections", &transaction_ops, S_IWUSR|S_IRUGO},
 		[NFSD_Filecache] = {"filecache", &filecache_ops, S_IRUGO},
 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
-		[NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO},
+		[NFSD_SupportedEnctypes] = {"supported_krb5_enctypes",
+					&supported_enctypes_fops, S_IRUGO},
 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
 #ifdef CONFIG_NFSD_V4
 		[NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},




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