[RFC PATCH v2 03/18] ntfs: Undeprecate iocharset= mount option

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Other fs drivers are using iocharset= mount option for specifying charset.
So mark iocharset= mount option as preferred and deprecate nls= mount
option.

Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
---
 Documentation/filesystems/ntfs.rst |  5 ++---
 fs/ntfs/inode.c                    |  2 +-
 fs/ntfs/super.c                    | 13 ++++---------
 fs/ntfs/unistr.c                   |  3 ++-
 4 files changed, 9 insertions(+), 14 deletions(-)

diff --git a/Documentation/filesystems/ntfs.rst b/Documentation/filesystems/ntfs.rst
index 5bb093a26485..51784141b56a 100644
--- a/Documentation/filesystems/ntfs.rst
+++ b/Documentation/filesystems/ntfs.rst
@@ -109,10 +109,9 @@ mount command (man 8 mount, also see man 5 fstab), the NTFS driver supports the
 following mount options:
 
 ======================= =======================================================
-iocharset=name		Deprecated option.  Still supported but please use
-			nls=name in the future.  See description for nls=name.
+nls=name		Alias for ``iocharset=`` mount option.
 
-nls=name		Character set to use when returning file names.
+iocharset=name		Character set to use when returning file names.
 			Unlike VFAT, NTFS suppresses names that contain
 			unconvertible characters.  Note that most character
 			sets contain insufficient characters to represent all
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index 08c659332e26..2ab071c4560d 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -2314,7 +2314,7 @@ int ntfs_show_options(struct seq_file *sf, struct dentry *root)
 		seq_printf(sf, ",fmask=0%o", vol->fmask);
 		seq_printf(sf, ",dmask=0%o", vol->dmask);
 	}
-	seq_printf(sf, ",nls=%s", vol->nls_map->charset);
+	seq_printf(sf, ",iocharset=%s", vol->nls_map->charset);
 	if (NVolCaseSensitive(vol))
 		seq_printf(sf, ",case_sensitive");
 	if (NVolShowSystemFiles(vol))
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index 001f4e053c85..55762abdc22a 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -192,11 +192,6 @@ static bool parse_options(ntfs_volume *vol, char *opt)
 			ntfs_warning(vol->sb, "Ignoring obsolete option %s.",
 					p);
 		else if (!strcmp(p, "nls") || !strcmp(p, "iocharset")) {
-			if (!strcmp(p, "iocharset"))
-				ntfs_warning(vol->sb, "Option iocharset is "
-						"deprecated. Please use "
-						"option nls=<charsetname> in "
-						"the future.");
 			if (!v || !*v)
 				goto needs_arg;
 use_utf8:
@@ -218,10 +213,10 @@ static bool parse_options(ntfs_volume *vol, char *opt)
 		} else if (!strcmp(p, "utf8")) {
 			bool val = false;
 			ntfs_warning(vol->sb, "Option utf8 is no longer "
-				   "supported, using option nls=utf8. Please "
-				   "use option nls=utf8 in the future and "
-				   "make sure utf8 is compiled either as a "
-				   "module or into the kernel.");
+				   "supported, using option iocharset=utf8. "
+				   "Please use option iocharset=utf8 in the "
+				   "future and make sure utf8 is compiled "
+				   "either as a module or into the kernel.");
 			if (!v || !*v)
 				val = true;
 			else if (!simple_getbool(v, &val))
diff --git a/fs/ntfs/unistr.c b/fs/ntfs/unistr.c
index a6b6c64f14a9..75a7f73bccdd 100644
--- a/fs/ntfs/unistr.c
+++ b/fs/ntfs/unistr.c
@@ -372,7 +372,8 @@ retry:			wc = nls->uni2char(le16_to_cpu(ins[i]), ns + o,
 conversion_err:
 	ntfs_error(vol->sb, "Unicode name contains characters that cannot be "
 			"converted to character set %s.  You might want to "
-			"try to use the mount option nls=utf8.", nls->charset);
+			"try to use the mount option iocharset=utf8.",
+			nls->charset);
 	if (ns != *outs)
 		kfree(ns);
 	if (wc != -ENAMETOOLONG)
-- 
2.20.1




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