[PATCH 6.6 054/102] smb: client: return reparse type in /proc/mounts

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6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Paulo Alcantara <pc@xxxxxxxxxxxxx>

[ Upstream commit 1e5f4240714bb238d2d17c7e14e5fb45c9140665 ]

Add support for returning reparse mount option in /proc/mounts.

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202402262152.YZOwDlCM-lkp@xxxxxxxxx/
Signed-off-by: Paulo Alcantara <pc@xxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/smb/client/cifsfs.c   |  2 ++
 fs/smb/client/cifsglob.h | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/fs/smb/client/cifsfs.c b/fs/smb/client/cifsfs.c
index 6d9d2174ee691..30bf754c9fc93 100644
--- a/fs/smb/client/cifsfs.c
+++ b/fs/smb/client/cifsfs.c
@@ -674,6 +674,8 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
 		seq_printf(s, ",backupgid=%u",
 			   from_kgid_munged(&init_user_ns,
 					    cifs_sb->ctx->backupgid));
+	seq_show_option(s, "reparse",
+			cifs_reparse_type_str(cifs_sb->ctx->reparse_type));
 
 	seq_printf(s, ",rsize=%u", cifs_sb->ctx->rsize);
 	seq_printf(s, ",wsize=%u", cifs_sb->ctx->wsize);
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index ddb64af50a45d..053556ca6f011 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -159,6 +159,18 @@ enum cifs_reparse_type {
 	CIFS_REPARSE_TYPE_DEFAULT = CIFS_REPARSE_TYPE_NFS,
 };
 
+static inline const char *cifs_reparse_type_str(enum cifs_reparse_type type)
+{
+	switch (type) {
+	case CIFS_REPARSE_TYPE_NFS:
+		return "nfs";
+	case CIFS_REPARSE_TYPE_WSL:
+		return "wsl";
+	default:
+		return "unknown";
+	}
+}
+
 struct session_key {
 	unsigned int len;
 	char *response;
-- 
2.43.0







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