This patch defines macro/inline dentry structure, and adds some helpers for
inline dir infrastructure.
Signed-off-by: Chao Yu <chao2...@samsung.com>
---
fs/f2fs/f2fs.h | 21 +++++++++++++++++++--
include/linux/f2fs_fs.h | 19 +++++++++++++++++++
2 files changed, 38 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 94cfdc4..b94721c 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -46,8 +46,9 @@
#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
#define F2FS_MOUNT_INLINE_XATTR 0x00000080
#define F2FS_MOUNT_INLINE_DATA 0x00000100
-#define F2FS_MOUNT_FLUSH_MERGE 0x00000200
-#define F2FS_MOUNT_NOBARRIER 0x00000400
+#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
+#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
+#define F2FS_MOUNT_NOBARRIER 0x00000800
#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
@@ -1049,6 +1050,7 @@ enum {
FI_NO_EXTENT, /* not to use the extent cache */
FI_INLINE_XATTR, /* used for inline xattr */
FI_INLINE_DATA, /* used for inline data*/
+ FI_INLINE_DENTRY, /* used for inline dentry */
FI_APPEND_WRITE, /* inode has appended data */
FI_UPDATE_WRITE, /* inode has in-place-update data */
FI_NEED_IPU, /* used fo ipu for fdatasync */
@@ -1093,6 +1095,8 @@ static inline void get_inline_info(struct f2fs_inode_info
*fi,
set_inode_flag(fi, FI_INLINE_XATTR);
if (ri->i_inline & F2FS_INLINE_DATA)
set_inode_flag(fi, FI_INLINE_DATA);
+ if (ri->i_inline & F2FS_INLINE_DENTRY)
+ set_inode_flag(fi, FI_INLINE_DENTRY);
}
static inline void set_raw_inline(struct f2fs_inode_info *fi,
@@ -1104,6 +1108,8 @@ static inline void set_raw_inline(struct f2fs_inode_info
*fi,
ri->i_inline |= F2FS_INLINE_XATTR;
if (is_inode_flag_set(fi, FI_INLINE_DATA))
ri->i_inline |= F2FS_INLINE_DATA;
+ if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
+ ri->i_inline |= F2FS_INLINE_DENTRY;
}
static inline int f2fs_has_inline_xattr(struct inode *inode)
@@ -1144,6 +1150,17 @@ static inline void *inline_data_addr(struct page *page)
return (void *)&(ri->i_addr[1]);
}
+static inline int f2fs_has_inline_dentry(struct inode *inode)
+{
+ return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
+}
+
+static inline void *inline_dentry_addr(struct page *page)
+{
+ struct f2fs_inode *ri = F2FS_INODE(page);
+ return (void *)&(ri->i_addr[1]);
+}
+
static inline int f2fs_readonly(struct super_block *sb)
{
return sb->s_flags & MS_RDONLY;
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 860313a..29b3cf3 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -170,6 +170,7 @@ struct f2fs_extent {
#define F2FS_INLINE_XATTR 0x01 /* file inline xattr flag */
#define F2FS_INLINE_DATA 0x02 /* file inline data flag */
+#define F2FS_INLINE_DENTRY 0x04 /* file inline dentry flag */
#define MAX_INLINE_DATA (sizeof(__le32) * (DEF_ADDRS_PER_INODE
- \
F2FS_INLINE_XATTR_ADDRS - 1))
@@ -435,6 +436,24 @@ struct f2fs_dentry_block {
__u8 filename[NR_DENTRY_IN_BLOCK][F2FS_SLOT_LEN];
} __packed;
+/* for inline dir */
+#define NR_INLINE_DENTRY (MAX_INLINE_DATA * BITS_PER_BYTE / \
+ ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
+ BITS_PER_BYTE + 1))
+#define INLINE_DENTRY_BITMAP_SIZE ((NR_INLINE_DENTRY + \
+ BITS_PER_BYTE - 1) / BITS_PER_BYTE)
+#define INLINE_RESERVED_SIZE (MAX_INLINE_DATA - \
+ ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
+ NR_INLINE_DENTRY + INLINE_DENTRY_BITMAP_SIZE))
+
+/* inline directory entry structure */
+struct f2fs_inline_dentry {
+ __u8 dentry_bitmap[INLINE_DENTRY_BITMAP_SIZE];
+ __u8 reserved[INLINE_RESERVED_SIZE];
+ struct f2fs_dir_entry dentry[NR_INLINE_DENTRY];
+ __u8 filename[NR_INLINE_DENTRY][F2FS_SLOT_LEN];
+} __packed;
+
/* file types used in inode_info->flags */
enum {
F2FS_FT_UNKNOWN,
--
2.0.1.474.g72c7794
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