Re: [PATCH 2/6] f2fs: make max inline size changeable

From: Jaegeuk Kim
Date: Mon Jul 17 2017 - 19:12:15 EST

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Hi Chao,

On 07/16, Chao Yu wrote:
> From: Chao Yu <yuchao0@xxxxxxxxxx>
>
> This patch tries to make below macros calculating max inline size,
> inline dentry field size considerring reserving size-changeable
> space:
> - MAX_INLINE_DATA
> - NR_INLINE_DENTRY
> - INLINE_DENTRY_BITMAP_SIZE
> - INLINE_RESERVED_SIZE
>
> Then, when inline_{data,dentry} options is enabled, it allows us to
> reserve inline space with different size flexibly for adding newly
> introduced inode attribute.
>
> Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
> ---
> fs/f2fs/data.c | 6 +--
> fs/f2fs/f2fs.h | 51 +++++++++++++++++++-----
> fs/f2fs/inline.c | 101 ++++++++++++++++++++++++------------------------
> fs/f2fs/inode.c | 4 +-
> fs/f2fs/super.c | 3 ++
> include/linux/f2fs_fs.h | 23 +----------
> 6 files changed, 102 insertions(+), 86 deletions(-)
>
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index 251356859476..f42a93781119 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -813,7 +813,7 @@ int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from)
> F2FS_GET_BLOCK_PRE_AIO :
> F2FS_GET_BLOCK_PRE_DIO);
> }
> - if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA) {
> + if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) {
> err = f2fs_convert_inline_inode(inode);
> if (err)
> return err;
> @@ -1857,8 +1857,8 @@ static int prepare_write_begin(struct f2fs_sb_info *sbi,
> set_new_dnode(&dn, inode, ipage, ipage, 0);
>
> if (f2fs_has_inline_data(inode)) {
> - if (pos + len <= MAX_INLINE_DATA) {
> - read_inline_data(page, ipage);
> + if (pos + len <= MAX_INLINE_DATA(inode)) {
> + read_inline_data(inode, page, ipage);
> set_inode_flag(inode, FI_DATA_EXIST);
> if (inode->i_nlink)
> set_inline_node(ipage);
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 23f117e4aeb8..8a23001e2ed2 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -355,6 +355,25 @@ struct f2fs_flush_device {
> u32 segments; /* # of segments to flush */
> };
>
> +/* for inline stuff */
> +#define DEF_INLINE_RESERVED_SIZE 1
> +
> +static inline int get_inline_reserved_size(struct inode *inode);
> +#define MAX_INLINE_DATA(inode) (sizeof(__le32) * (DEF_ADDRS_PER_INODE -\
> + get_inline_reserved_size(inode) -\
> + F2FS_INLINE_XATTR_ADDRS))
> +
> +/* for inline dir */
> +#define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
> + ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
> + BITS_PER_BYTE + 1))
> +#define INLINE_DENTRY_BITMAP_SIZE(inode) ((NR_INLINE_DENTRY(inode) + \
> + BITS_PER_BYTE - 1) / BITS_PER_BYTE)
> +#define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \
> + ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
> + NR_INLINE_DENTRY(inode) + \
> + INLINE_DENTRY_BITMAP_SIZE(inode)))
> +
> /*
> * For INODE and NODE manager
> */
> @@ -380,14 +399,19 @@ static inline void make_dentry_ptr_block(struct inode *inode,
> }
>
> static inline void make_dentry_ptr_inline(struct inode *inode,
> - struct f2fs_dentry_ptr *d, struct f2fs_inline_dentry *t)
> + struct f2fs_dentry_ptr *d, void *t)
> {
> + int entry_cnt = NR_INLINE_DENTRY(inode);
> + int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
> + int reserved_size = INLINE_RESERVED_SIZE(inode);
> +
> d->inode = inode;
> - d->max = NR_INLINE_DENTRY;
> - d->nr_bitmap = INLINE_DENTRY_BITMAP_SIZE;
> - d->bitmap = &t->dentry_bitmap;
> - d->dentry = t->dentry;
> - d->filename = t->filename;
> + d->max = entry_cnt;
> + d->nr_bitmap = bitmap_size;
> + d->bitmap = t;
> + d->dentry = t + bitmap_size + reserved_size;
> + d->filename = t + bitmap_size + reserved_size +
> + SIZE_OF_DIR_ENTRY * entry_cnt;
> }
>
> /*
> @@ -540,6 +564,8 @@ struct f2fs_inode_info {
> struct extent_tree *extent_tree; /* cached extent_tree entry */
> struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
> struct rw_semaphore i_mmap_sem;
> +
> + int i_inline_reserved; /* reserved size in inline data */
> };
>
> static inline void get_extent_info(struct extent_info *ext,
> @@ -2069,11 +2095,12 @@ static inline bool f2fs_is_drop_cache(struct inode *inode)
> return is_inode_flag_set(inode, FI_DROP_CACHE);
> }
>
> -static inline void *inline_data_addr(struct page *page)
> +static inline void *inline_data_addr(struct inode *inode, struct page *page)
> {
> struct f2fs_inode *ri = F2FS_INODE(page);
> + int reserved_size = get_inline_reserved_size(inode);
>
> - return (void *)&(ri->i_addr[1]);
> + return (void *)&(ri->i_addr[reserved_size]);
> }
>
> static inline int f2fs_has_inline_dentry(struct inode *inode)
> @@ -2184,6 +2211,11 @@ static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
> return ret;
> }
>
> +static inline int get_inline_reserved_size(struct inode *inode)
> +{
> + return F2FS_I(inode)->i_inline_reserved;
> +}
> +
> #define get_inode_mode(i) \
> ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
> (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
> @@ -2681,7 +2713,8 @@ extern struct kmem_cache *inode_entry_slab;
> */
> bool f2fs_may_inline_data(struct inode *inode);
> bool f2fs_may_inline_dentry(struct inode *inode);
> -void read_inline_data(struct page *page, struct page *ipage);
> +void read_inline_data(struct inode *inode, struct page *page,
> + struct page *ipage);
> void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from);
> int f2fs_read_inline_data(struct inode *inode, struct page *page);
> int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
> diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
> index 2082816a504a..838ad2339e54 100644
> --- a/fs/f2fs/inline.c
> +++ b/fs/f2fs/inline.c
> @@ -22,7 +22,7 @@ bool f2fs_may_inline_data(struct inode *inode)
> if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))
> return false;
>
> - if (i_size_read(inode) > MAX_INLINE_DATA)
> + if (i_size_read(inode) > MAX_INLINE_DATA(inode))
> return false;
>
> if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode))
> @@ -42,7 +42,8 @@ bool f2fs_may_inline_dentry(struct inode *inode)
> return true;
> }
>
> -void read_inline_data(struct page *page, struct page *ipage)
> +void read_inline_data(struct inode *inode, struct page *page,
> + struct page *ipage)
> {
> void *src_addr, *dst_addr;

How about
struct inode *inode = page->mapping->host;

Thanks,

>
> @@ -51,12 +52,12 @@ void read_inline_data(struct page *page, struct page *ipage)
>
> f2fs_bug_on(F2FS_P_SB(page), page->index);
>
> - zero_user_segment(page, MAX_INLINE_DATA, PAGE_SIZE);
> + zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE);
>
> /* Copy the whole inline data block */
> - src_addr = inline_data_addr(ipage);
> + src_addr = inline_data_addr(inode, ipage);
> dst_addr = kmap_atomic(page);
> - memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
> + memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
> flush_dcache_page(page);
> kunmap_atomic(dst_addr);
> if (!PageUptodate(page))
> @@ -67,13 +68,13 @@ void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from)
> {
> void *addr;
>
> - if (from >= MAX_INLINE_DATA)
> + if (from >= MAX_INLINE_DATA(inode))
> return;
>
> - addr = inline_data_addr(ipage);
> + addr = inline_data_addr(inode, ipage);
>
> f2fs_wait_on_page_writeback(ipage, NODE, true);
> - memset(addr + from, 0, MAX_INLINE_DATA - from);
> + memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
> set_page_dirty(ipage);
>
> if (from == 0)
> @@ -98,7 +99,7 @@ int f2fs_read_inline_data(struct inode *inode, struct page *page)
> if (page->index)
> zero_user_segment(page, 0, PAGE_SIZE);
> else
> - read_inline_data(page, ipage);
> + read_inline_data(inode, page, ipage);
>
> if (!PageUptodate(page))
> SetPageUptodate(page);
> @@ -128,7 +129,7 @@ int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
>
> f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
>
> - read_inline_data(page, dn->inode_page);
> + read_inline_data(dn->inode, page, dn->inode_page);
> set_page_dirty(page);
>
> /* clear dirty state */
> @@ -216,8 +217,8 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page)
>
> f2fs_wait_on_page_writeback(dn.inode_page, NODE, true);
> src_addr = kmap_atomic(page);
> - dst_addr = inline_data_addr(dn.inode_page);
> - memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
> + dst_addr = inline_data_addr(inode, dn.inode_page);
> + memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
> kunmap_atomic(src_addr);
> set_page_dirty(dn.inode_page);
>
> @@ -255,9 +256,9 @@ bool recover_inline_data(struct inode *inode, struct page *npage)
>
> f2fs_wait_on_page_writeback(ipage, NODE, true);
>
> - src_addr = inline_data_addr(npage);
> - dst_addr = inline_data_addr(ipage);
> - memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
> + src_addr = inline_data_addr(inode, npage);
> + dst_addr = inline_data_addr(inode, ipage);
> + memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
>
> set_inode_flag(inode, FI_INLINE_DATA);
> set_inode_flag(inode, FI_DATA_EXIST);
> @@ -285,11 +286,11 @@ struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir,
> struct fscrypt_name *fname, struct page **res_page)
> {
> struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
> - struct f2fs_inline_dentry *inline_dentry;
> struct qstr name = FSTR_TO_QSTR(&fname->disk_name);
> struct f2fs_dir_entry *de;
> struct f2fs_dentry_ptr d;
> struct page *ipage;
> + void *inline_dentry;
> f2fs_hash_t namehash;
>
> ipage = get_node_page(sbi, dir->i_ino);
> @@ -300,9 +301,9 @@ struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir,
>
> namehash = f2fs_dentry_hash(&name, fname);
>
> - inline_dentry = inline_data_addr(ipage);
> + inline_dentry = inline_data_addr(dir, ipage);
>
> - make_dentry_ptr_inline(NULL, &d, inline_dentry);
> + make_dentry_ptr_inline(dir, &d, inline_dentry);
> de = find_target_dentry(fname, namehash, NULL, &d);
> unlock_page(ipage);
> if (de)
> @@ -316,19 +317,19 @@ struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir,
> int make_empty_inline_dir(struct inode *inode, struct inode *parent,
> struct page *ipage)
> {
> - struct f2fs_inline_dentry *inline_dentry;
> struct f2fs_dentry_ptr d;
> + void *inline_dentry;
>
> - inline_dentry = inline_data_addr(ipage);
> + inline_dentry = inline_data_addr(inode, ipage);
>
> - make_dentry_ptr_inline(NULL, &d, inline_dentry);
> + make_dentry_ptr_inline(inode, &d, inline_dentry);
> do_make_empty_dir(inode, parent, &d);
>
> set_page_dirty(ipage);
>
> /* update i_size to MAX_INLINE_DATA */
> - if (i_size_read(inode) < MAX_INLINE_DATA)
> - f2fs_i_size_write(inode, MAX_INLINE_DATA);
> + if (i_size_read(inode) < MAX_INLINE_DATA(inode))
> + f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
> return 0;
> }
>
> @@ -337,7 +338,7 @@ int make_empty_inline_dir(struct inode *inode, struct inode *parent,
> * release ipage in this function.
> */
> static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
> - struct f2fs_inline_dentry *inline_dentry)
> + void *inline_dentry)
> {
> struct page *page;
> struct dnode_of_data dn;
> @@ -357,12 +358,12 @@ static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
> goto out;
>
> f2fs_wait_on_page_writeback(page, DATA, true);
> - zero_user_segment(page, MAX_INLINE_DATA, PAGE_SIZE);
> + zero_user_segment(page, MAX_INLINE_DATA(dir), PAGE_SIZE);
>
> dentry_blk = kmap_atomic(page);
>
> - make_dentry_ptr_inline(NULL, &src, inline_dentry);
> - make_dentry_ptr_block(NULL, &dst, dentry_blk);
> + make_dentry_ptr_inline(dir, &src, inline_dentry);
> + make_dentry_ptr_block(dir, &dst, dentry_blk);
>
> /* copy data from inline dentry block to new dentry block */
> memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
> @@ -395,14 +396,13 @@ static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
> return err;
> }
>
> -static int f2fs_add_inline_entries(struct inode *dir,
> - struct f2fs_inline_dentry *inline_dentry)
> +static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
> {
> struct f2fs_dentry_ptr d;
> unsigned long bit_pos = 0;
> int err = 0;
>
> - make_dentry_ptr_inline(NULL, &d, inline_dentry);
> + make_dentry_ptr_inline(dir, &d, inline_dentry);
>
> while (bit_pos < d.max) {
> struct f2fs_dir_entry *de;
> @@ -444,19 +444,19 @@ static int f2fs_add_inline_entries(struct inode *dir,
> }
>
> static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
> - struct f2fs_inline_dentry *inline_dentry)
> + void *inline_dentry)
> {
> - struct f2fs_inline_dentry *backup_dentry;
> + void *backup_dentry;
> int err;
>
> backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
> - sizeof(struct f2fs_inline_dentry), GFP_F2FS_ZERO);
> + MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
> if (!backup_dentry) {
> f2fs_put_page(ipage, 1);
> return -ENOMEM;
> }
>
> - memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA);
> + memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
> truncate_inline_inode(dir, ipage, 0);
>
> unlock_page(ipage);
> @@ -473,9 +473,9 @@ static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
> return 0;
> recover:
> lock_page(ipage);
> - memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA);
> + memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
> f2fs_i_depth_write(dir, 0);
> - f2fs_i_size_write(dir, MAX_INLINE_DATA);
> + f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
> set_page_dirty(ipage);
> f2fs_put_page(ipage, 1);
>
> @@ -484,7 +484,7 @@ static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
> }
>
> static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage,
> - struct f2fs_inline_dentry *inline_dentry)
> + void *inline_dentry)
> {
> if (!F2FS_I(dir)->i_dir_level)
> return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
> @@ -500,7 +500,7 @@ int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
> struct page *ipage;
> unsigned int bit_pos;
> f2fs_hash_t name_hash;
> - struct f2fs_inline_dentry *inline_dentry = NULL;
> + void *inline_dentry = NULL;
> struct f2fs_dentry_ptr d;
> int slots = GET_DENTRY_SLOTS(new_name->len);
> struct page *page = NULL;
> @@ -510,8 +510,8 @@ int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
> if (IS_ERR(ipage))
> return PTR_ERR(ipage);
>
> - inline_dentry = inline_data_addr(ipage);
> - make_dentry_ptr_inline(NULL, &d, inline_dentry);
> + inline_dentry = inline_data_addr(dir, ipage);
> + make_dentry_ptr_inline(dir, &d, inline_dentry);
>
> bit_pos = room_for_filename(d.bitmap, slots, d.max);
> if (bit_pos >= d.max) {
> @@ -557,8 +557,8 @@ int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
> void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
> struct inode *dir, struct inode *inode)
> {
> - struct f2fs_inline_dentry *inline_dentry;
> struct f2fs_dentry_ptr d;
> + void *inline_dentry;
> int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
> unsigned int bit_pos;
> int i;
> @@ -566,8 +566,8 @@ void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
> lock_page(page);
> f2fs_wait_on_page_writeback(page, NODE, true);
>
> - inline_dentry = inline_data_addr(page);
> - make_dentry_ptr_inline(NULL, &d, inline_dentry);
> + inline_dentry = inline_data_addr(dir, page);
> + make_dentry_ptr_inline(dir, &d, inline_dentry);
>
> bit_pos = dentry - d.dentry;
> for (i = 0; i < slots; i++)
> @@ -588,15 +588,15 @@ bool f2fs_empty_inline_dir(struct inode *dir)
> struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
> struct page *ipage;
> unsigned int bit_pos = 2;
> - struct f2fs_inline_dentry *inline_dentry;
> + void *inline_dentry;
> struct f2fs_dentry_ptr d;
>
> ipage = get_node_page(sbi, dir->i_ino);
> if (IS_ERR(ipage))
> return false;
>
> - inline_dentry = inline_data_addr(ipage);
> - make_dentry_ptr_inline(NULL, &d, inline_dentry);
> + inline_dentry = inline_data_addr(dir, ipage);
> + make_dentry_ptr_inline(dir, &d, inline_dentry);
>
> bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
>
> @@ -612,9 +612,9 @@ int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
> struct fscrypt_str *fstr)
> {
> struct inode *inode = file_inode(file);
> - struct f2fs_inline_dentry *inline_dentry = NULL;
> struct page *ipage = NULL;
> struct f2fs_dentry_ptr d;
> + void *inline_dentry = NULL;
> int err;
>
> make_dentry_ptr_inline(inode, &d, inline_dentry);
> @@ -626,7 +626,7 @@ int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
> if (IS_ERR(ipage))
> return PTR_ERR(ipage);
>
> - inline_dentry = inline_data_addr(ipage);
> + inline_dentry = inline_data_addr(inode, ipage);
>
> make_dentry_ptr_inline(inode, &d, inline_dentry);
>
> @@ -657,7 +657,7 @@ int f2fs_inline_data_fiemap(struct inode *inode,
> goto out;
> }
>
> - ilen = min_t(size_t, MAX_INLINE_DATA, i_size_read(inode));
> + ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
> if (start >= ilen)
> goto out;
> if (start + len < ilen)
> @@ -666,7 +666,8 @@ int f2fs_inline_data_fiemap(struct inode *inode,
>
> get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
> byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
> - byteaddr += (char *)inline_data_addr(ipage) - (char *)F2FS_INODE(ipage);
> + byteaddr += (char *)inline_data_addr(inode, ipage) -
> + (char *)F2FS_INODE(ipage);
> err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
> out:
> f2fs_put_page(ipage, 1);
> diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
> index 6cd312a17c69..32ec6b23fe01 100644
> --- a/fs/f2fs/inode.c
> +++ b/fs/f2fs/inode.c
> @@ -87,9 +87,9 @@ static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
>
> static void __recover_inline_status(struct inode *inode, struct page *ipage)
> {
> - void *inline_data = inline_data_addr(ipage);
> + void *inline_data = inline_data_addr(inode, ipage);
> __le32 *start = inline_data;
> - __le32 *end = start + MAX_INLINE_DATA / sizeof(__le32);
> + __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
>
> while (start < end) {
> if (*start++) {
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index dd92170e0d6d..71ad30214ef0 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -446,6 +446,9 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb)
> #endif
> /* Will be used by directory only */
> fi->i_dir_level = F2FS_SB(sb)->dir_level;
> +
> + fi->i_inline_reserved = DEF_INLINE_RESERVED_SIZE;
> +
> return &fi->vfs_inode;
> }
>
> diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
> index b6feed6547ce..060b1c5b0836 100644
> --- a/include/linux/f2fs_fs.h
> +++ b/include/linux/f2fs_fs.h
> @@ -206,9 +206,6 @@ struct f2fs_extent {
> #define F2FS_DATA_EXIST 0x08 /* file inline data exist flag */
> #define F2FS_INLINE_DOTS 0x10 /* file having implicit dot dentries */
>
> -#define MAX_INLINE_DATA (sizeof(__le32) * (DEF_ADDRS_PER_INODE - \
> - F2FS_INLINE_XATTR_ADDRS - 1))
> -
> struct f2fs_inode {
> __le16 i_mode; /* file mode */
> __u8 i_advise; /* file hints */
> @@ -465,7 +462,7 @@ typedef __le32 f2fs_hash_t;
> #define MAX_DIR_BUCKETS (1 << ((MAX_DIR_HASH_DEPTH / 2) - 1))
>
> /*
> - * space utilization of regular dentry and inline dentry
> + * space utilization of regular dentry and inline dentry (w/o extra reservation)
> * regular dentry inline dentry
> * bitmap 1 * 27 = 27 1 * 23 = 23
> * reserved 1 * 3 = 3 1 * 7 = 7
> @@ -501,24 +498,6 @@ 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,
> --
> 2.13.0.90.g1eb437020

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