From c3aa077648e147783a7a53b409578234647db853 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Wed, 21 Dec 2011 20:17:10 +0100
Subject: reiserfs: Properly display mount options in /proc/mounts

Make reiserfs properly display mount options in /proc/mounts.

CC: reiserfs-devel@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/reiserfs/bitmap.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)

(limited to 'fs/reiserfs/bitmap.c')

diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c
index d1aca1df4f92..a945cd265228 100644
--- a/fs/reiserfs/bitmap.c
+++ b/fs/reiserfs/bitmap.c
@@ -13,6 +13,7 @@
 #include <linux/reiserfs_fs_sb.h>
 #include <linux/reiserfs_fs_i.h>
 #include <linux/quotaops.h>
+#include <linux/seq_file.h>
 
 #define PREALLOCATION_SIZE 9
 
@@ -634,6 +635,96 @@ int reiserfs_parse_alloc_options(struct super_block *s, char *options)
 	return 0;
 }
 
+static void print_sep(struct seq_file *seq, int *first)
+{
+	if (!*first)
+		seq_puts(seq, ":");
+	else
+		*first = 0;
+}
+
+void show_alloc_options(struct seq_file *seq, struct super_block *s)
+{
+	int first = 1;
+
+	if (SB_ALLOC_OPTS(s) == ((1 << _ALLOC_skip_busy) |
+		(1 << _ALLOC_dirid_groups) | (1 << _ALLOC_packing_groups)))
+		return;
+
+	seq_puts(seq, ",alloc=");
+
+	if (TEST_OPTION(concentrating_formatted_nodes, s)) {
+		print_sep(seq, &first);
+		if (REISERFS_SB(s)->s_alloc_options.border != 10) {
+			seq_printf(seq, "concentrating_formatted_nodes=%d",
+				100 / REISERFS_SB(s)->s_alloc_options.border);
+		} else
+			seq_puts(seq, "concentrating_formatted_nodes");
+	}
+	if (TEST_OPTION(displacing_large_files, s)) {
+		print_sep(seq, &first);
+		if (REISERFS_SB(s)->s_alloc_options.large_file_size != 16) {
+			seq_printf(seq, "displacing_large_files=%lu",
+			    REISERFS_SB(s)->s_alloc_options.large_file_size);
+		} else
+			seq_puts(seq, "displacing_large_files");
+	}
+	if (TEST_OPTION(displacing_new_packing_localities, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "displacing_new_packing_localities");
+	}
+	if (TEST_OPTION(old_hashed_relocation, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "old_hashed_relocation");
+	}
+	if (TEST_OPTION(new_hashed_relocation, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "new_hashed_relocation");
+	}
+	if (TEST_OPTION(dirid_groups, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "dirid_groups");
+	}
+	if (TEST_OPTION(oid_groups, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "oid_groups");
+	}
+	if (TEST_OPTION(packing_groups, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "packing_groups");
+	}
+	if (TEST_OPTION(hashed_formatted_nodes, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "hashed_formatted_nodes");
+	}
+	if (TEST_OPTION(skip_busy, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "skip_busy");
+	}
+	if (TEST_OPTION(hundredth_slices, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "hundredth_slices");
+	}
+	if (TEST_OPTION(old_way, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "old_way");
+	}
+	if (TEST_OPTION(displace_based_on_dirid, s)) {
+		print_sep(seq, &first);
+		seq_puts(seq, "displace_based_on_dirid");
+	}
+	if (REISERFS_SB(s)->s_alloc_options.preallocmin != 0) {
+		print_sep(seq, &first);
+		seq_printf(seq, "preallocmin=%d",
+				REISERFS_SB(s)->s_alloc_options.preallocmin);
+	}
+	if (REISERFS_SB(s)->s_alloc_options.preallocsize != 17) {
+		print_sep(seq, &first);
+		seq_printf(seq, "preallocsize=%d",
+				REISERFS_SB(s)->s_alloc_options.preallocsize);
+	}
+}
+
 static inline void new_hashed_relocation(reiserfs_blocknr_hint_t * hint)
 {
 	char *hash_in;
-- 
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