f2fs: update f2fs documentation for inline dir support

[deliverable/linux.git] / fs / f2fs / dir.c

diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 99e944e1dd014690b36d196e4920280dcc0052ea..cc6474a85d6c5c8bc149600d18630a4b8b1af999 100644 (file)
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -201,6 +201,9 @@ struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
        unsigned int max_depth;
        unsigned int level;
 
+       if (f2fs_has_inline_dentry(dir))
+               return find_in_inline_dir(dir, child, res_page);
+
        if (npages == 0)
                return NULL;
 
@@ -227,6 +230,9 @@ struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p)
        struct f2fs_dir_entry *de;
        struct f2fs_dentry_block *dentry_blk;
 
+       if (f2fs_has_inline_dentry(dir))
+               return f2fs_parent_inline_dir(dir, p);
+
        page = get_lock_data_page(dir, 0);
        if (IS_ERR(page))
                return NULL;
@@ -247,7 +253,8 @@ ino_t f2fs_inode_by_name(struct inode *dir, struct qstr *qstr)
        de = f2fs_find_entry(dir, qstr, &page);
        if (de) {
                res = le32_to_cpu(de->ino);
-               kunmap(page);
+               if (!f2fs_has_inline_dentry(dir))
+                       kunmap(page);
                f2fs_put_page(page, 0);
        }
 
@@ -261,7 +268,8 @@ void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
        f2fs_wait_on_page_writeback(page, DATA);
        de->ino = cpu_to_le32(inode->i_ino);
        set_de_type(de, inode);
-       kunmap(page);
+       if (!f2fs_has_inline_dentry(dir))
+               kunmap(page);
        set_page_dirty(page);
        dir->i_mtime = dir->i_ctime = CURRENT_TIME;
        mark_inode_dirty(dir);
@@ -303,6 +311,9 @@ static int make_empty_dir(struct inode *inode,
        struct f2fs_dentry_block *dentry_blk;
        struct f2fs_dir_entry *de;
 
+       if (f2fs_has_inline_dentry(inode))
+               return make_empty_inline_dir(inode, parent, page);
+
        dentry_page = get_new_data_page(inode, page, 0, true);
        if (IS_ERR(dentry_page))
                return PTR_ERR(dentry_page);
@@ -462,6 +473,14 @@ int __f2fs_add_link(struct inode *dir, const struct qstr *name,
        int err = 0;
        int i;
 
+       if (f2fs_has_inline_dentry(dir)) {
+               err = f2fs_add_inline_entry(dir, name, inode);
+               if (!err || err != -EAGAIN)
+                       return err;
+               else
+                       err = 0;
+       }
+
        dentry_hash = f2fs_dentry_hash(name);
        level = 0;
        current_depth = F2FS_I(dir)->i_current_depth;
@@ -600,6 +619,9 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
        int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
        int i;
 
+       if (f2fs_has_inline_dentry(dir))
+               return f2fs_delete_inline_entry(dentry, page, dir, inode);
+
        lock_page(page);
        f2fs_wait_on_page_writeback(page, DATA);
 
@@ -637,6 +659,9 @@ bool f2fs_empty_dir(struct inode *dir)
        struct f2fs_dentry_block *dentry_blk;
        unsigned long nblock = dir_blocks(dir);
 
+       if (f2fs_has_inline_dentry(dir))
+               return f2fs_empty_inline_dir(dir);
+
        for (bidx = 0; bidx < nblock; bidx++) {
                dentry_page = get_lock_data_page(dir, bidx);
                if (IS_ERR(dentry_page)) {
@@ -676,6 +701,9 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
        unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK);
        unsigned char d_type = DT_UNKNOWN;
 
+       if (f2fs_has_inline_dentry(inode))
+               return f2fs_read_inline_dir(file, ctx);
+
        bit_pos = ((unsigned long)ctx->pos % NR_DENTRY_IN_BLOCK);
 
        /* readahead for multi pages of dir */