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

From: Chao Yu
Date: Sun Jul 16 2017 - 03:11:34 EST

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;

@@ -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