[RFC PATCH 1/5] f2fs: add inline tail mount option

[Wu Bo]

Same as inline data, use mount option to control inline tail enable or
disable. And enable inline tail as default.

Signed-off-by: Wu Bo <bo.wu@xxxxxxxx>
---
 fs/f2fs/f2fs.h  |  1 +
 fs/f2fs/super.c | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 1974b6aff397..a1d8d8e0a49a 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -116,6 +116,7 @@ extern const char *f2fs_fault_name[FAULT_MAX];
 #define	F2FS_MOUNT_GC_MERGE		0x02000000
 #define F2FS_MOUNT_COMPRESS_CACHE	0x04000000
 #define F2FS_MOUNT_AGE_EXTENT_CACHE	0x08000000
+#define F2FS_MOUNT_INLINE_TAIL		0x10000000
 
 #define F2FS_OPTION(sbi)	((sbi)->mount_opt)
 #define clear_opt(sbi, option)	(F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 1f1b3647a998..5cd0466cb37f 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -136,6 +136,7 @@ enum {
 	Opt_inline_data,
 	Opt_inline_dentry,
 	Opt_noinline_dentry,
+	Opt_inline_tail,
 	Opt_flush_merge,
 	Opt_noflush_merge,
 	Opt_barrier,
@@ -144,6 +145,7 @@ enum {
 	Opt_extent_cache,
 	Opt_noextent_cache,
 	Opt_noinline_data,
+	Opt_noinline_tail,
 	Opt_data_flush,
 	Opt_reserve_root,
 	Opt_resgid,
@@ -214,6 +216,7 @@ static match_table_t f2fs_tokens = {
 	{Opt_inline_data, "inline_data"},
 	{Opt_inline_dentry, "inline_dentry"},
 	{Opt_noinline_dentry, "noinline_dentry"},
+	{Opt_inline_tail, "inline_tail"},
 	{Opt_flush_merge, "flush_merge"},
 	{Opt_noflush_merge, "noflush_merge"},
 	{Opt_barrier, "barrier"},
@@ -222,6 +225,7 @@ static match_table_t f2fs_tokens = {
 	{Opt_extent_cache, "extent_cache"},
 	{Opt_noextent_cache, "noextent_cache"},
 	{Opt_noinline_data, "noinline_data"},
+	{Opt_noinline_tail, "noinline_tail"},
 	{Opt_data_flush, "data_flush"},
 	{Opt_reserve_root, "reserve_root=%u"},
 	{Opt_resgid, "resgid=%u"},
@@ -815,6 +819,9 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 		case Opt_noinline_dentry:
 			clear_opt(sbi, INLINE_DENTRY);
 			break;
+		case Opt_inline_tail:
+			set_opt(sbi, INLINE_TAIL);
+			break;
 		case Opt_flush_merge:
 			set_opt(sbi, FLUSH_MERGE);
 			break;
@@ -839,6 +846,9 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 		case Opt_noinline_data:
 			clear_opt(sbi, INLINE_DATA);
 			break;
+		case Opt_noinline_tail:
+			clear_opt(sbi, INLINE_DATA);
+			break;
 		case Opt_data_flush:
 			set_opt(sbi, DATA_FLUSH);
 			break;
@@ -1999,6 +2009,10 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
 		seq_puts(seq, ",inline_data");
 	else
 		seq_puts(seq, ",noinline_data");
+	if (test_opt(sbi, INLINE_TAIL))
+		seq_puts(seq, ",inline_tail");
+	else
+		seq_puts(seq, ",noinline_tail");
 	if (test_opt(sbi, INLINE_DENTRY))
 		seq_puts(seq, ",inline_dentry");
 	else
@@ -2148,6 +2162,7 @@ static void default_options(struct f2fs_sb_info *sbi, bool remount)
 	set_opt(sbi, INLINE_XATTR);
 	set_opt(sbi, INLINE_DATA);
 	set_opt(sbi, INLINE_DENTRY);
+	set_opt(sbi, INLINE_TAIL);
 	set_opt(sbi, MERGE_CHECKPOINT);
 	F2FS_OPTION(sbi).unusable_cap = 0;
 	sbi->sb->s_flags |= SB_LAZYTIME;
-- 
2.35.3