17 files changed, 827 insertions, 798 deletions

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index e38221d96564..8eb184c3de84 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -24,7 +24,7 @@
 #include <trace/events/f2fs.h>
 
 static struct kmem_cache *ino_entry_slab;
-struct kmem_cache *inode_entry_slab;
+struct kmem_cache *f2fs_inode_entry_slab;
 
 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io)
 {
@@ -36,7 +36,7 @@ void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io)
 /*
  * We guarantee no failure on the returned page.
  */
-struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
+struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
 {
 	struct address_space *mapping = META_MAPPING(sbi);
 	struct page *page = NULL;
@@ -108,18 +108,19 @@ out:
 	return page;
 }
 
-struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
+struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
 {
 	return __get_meta_page(sbi, index, true);
 }
 
 /* for POR only */
-struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)
+struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)
 {
 	return __get_meta_page(sbi, index, false);
 }
 
-bool is_valid_meta_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type)
+bool f2fs_is_valid_meta_blkaddr(struct f2fs_sb_info *sbi,
+					block_t blkaddr, int type)
 {
 	switch (type) {
 	case META_NAT:
@@ -153,7 +154,7 @@ bool is_valid_meta_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type)
 /*
  * Readahead CP/NAT/SIT/SSA pages
  */
-int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
+int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
 							int type, bool sync)
 {
 	struct page *page;
@@ -175,7 +176,7 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
 	blk_start_plug(&plug);
 	for (; nrpages-- > 0; blkno++) {
 
-		if (!is_valid_meta_blkaddr(sbi, blkno, type))
+		if (!f2fs_is_valid_meta_blkaddr(sbi, blkno, type))
 			goto out;
 
 		switch (type) {
@@ -219,7 +220,7 @@ out:
 	return blkno - start;
 }
 
-void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index)
+void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index)
 {
 	struct page *page;
 	bool readahead = false;
@@ -230,7 +231,7 @@ void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index)
 	f2fs_put_page(page, 0);
 
 	if (readahead)
-		ra_meta_pages(sbi, index, BIO_MAX_PAGES, META_POR, true);
+		f2fs_ra_meta_pages(sbi, index, BIO_MAX_PAGES, META_POR, true);
 }
 
 static int __f2fs_write_meta_page(struct page *page,
@@ -251,7 +252,7 @@ static int __f2fs_write_meta_page(struct page *page,
 	if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
 		goto redirty_out;
 
-	write_meta_page(sbi, page, io_type);
+	f2fs_do_write_meta_page(sbi, page, io_type);
 	dec_page_count(sbi, F2FS_DIRTY_META);
 
 	if (wbc->for_reclaim)
@@ -296,7 +297,7 @@ static int f2fs_write_meta_pages(struct address_space *mapping,
 
 	trace_f2fs_writepages(mapping->host, wbc, META);
 	diff = nr_pages_to_write(sbi, META, wbc);
-	written = sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO);
+	written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO);
 	mutex_unlock(&sbi->cp_mutex);
 	wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff);
 	return 0;
@@ -307,7 +308,7 @@ skip_write:
 	return 0;
 }
 
-long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
+long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
 				long nr_to_write, enum iostat_type io_type)
 {
 	struct address_space *mapping = META_MAPPING(sbi);
@@ -457,20 +458,20 @@ static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
 	spin_unlock(&im->ino_lock);
 }
 
-void add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
+void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
 {
 	/* add new dirty ino entry into list */
 	__add_ino_entry(sbi, ino, 0, type);
 }
 
-void remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
+void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
 {
 	/* remove dirty ino entry from list */
 	__remove_ino_entry(sbi, ino, type);
 }
 
 /* mode should be APPEND_INO or UPDATE_INO */
-bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
+bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
 {
 	struct inode_management *im = &sbi->im[mode];
 	struct ino_entry *e;
@@ -481,7 +482,7 @@ bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
 	return e ? true : false;
 }
 
-void release_ino_entry(struct f2fs_sb_info *sbi, bool all)
+void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all)
 {
 	struct ino_entry *e, *tmp;
 	int i;
@@ -500,13 +501,13 @@ void release_ino_entry(struct f2fs_sb_info *sbi, bool all)
 	}
 }
 
-void set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
+void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
 					unsigned int devidx, int type)
 {
 	__add_ino_entry(sbi, ino, devidx, type);
 }
 
-bool is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
+bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
 					unsigned int devidx, int type)
 {
 	struct inode_management *im = &sbi->im[type];
@@ -521,7 +522,7 @@ bool is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
 	return is_dirty;
 }
 
-int acquire_orphan_inode(struct f2fs_sb_info *sbi)
+int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi)
 {
 	struct inode_management *im = &sbi->im[ORPHAN_INO];
 	int err = 0;
@@ -544,7 +545,7 @@ int acquire_orphan_inode(struct f2fs_sb_info *sbi)
 	return err;
 }
 
-void release_orphan_inode(struct f2fs_sb_info *sbi)
+void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi)
 {
 	struct inode_management *im = &sbi->im[ORPHAN_INO];
 
@@ -554,14 +555,14 @@ void release_orphan_inode(struct f2fs_sb_info *sbi)
 	spin_unlock(&im->ino_lock);
 }
 
-void add_orphan_inode(struct inode *inode)
+void f2fs_add_orphan_inode(struct inode *inode)
 {
 	/* add new orphan ino entry into list */
 	__add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO);
-	update_inode_page(inode);
+	f2fs_update_inode_page(inode);
 }
 
-void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
+void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
 {
 	/* remove orphan entry from orphan list */
 	__remove_ino_entry(sbi, ino, ORPHAN_INO);
@@ -571,7 +572,7 @@ static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
 {
 	struct inode *inode;
 	struct node_info ni;
-	int err = acquire_orphan_inode(sbi);
+	int err = f2fs_acquire_orphan_inode(sbi);
 
 	if (err)
 		goto err_out;
@@ -599,7 +600,7 @@ static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
 	/* truncate all the data during iput */
 	iput(inode);
 
-	get_node_info(sbi, ino, &ni);
+	f2fs_get_node_info(sbi, ino, &ni);
 
 	/* ENOMEM was fully retried in f2fs_evict_inode. */
 	if (ni.blk_addr != NULL_ADDR) {
@@ -617,7 +618,7 @@ err_out:
 	return err;
 }
 
-int recover_orphan_inodes(struct f2fs_sb_info *sbi)
+int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)
 {
 	block_t start_blk, orphan_blocks, i, j;
 	unsigned int s_flags = sbi->sb->s_flags;
@@ -645,10 +646,10 @@ int recover_orphan_inodes(struct f2fs_sb_info *sbi)
 	start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi);
 	orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi);
 
-	ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true);
+	f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true);
 
 	for (i = 0; i < orphan_blocks; i++) {
-		struct page *page = get_meta_page(sbi, start_blk + i);
+		struct page *page = f2fs_get_meta_page(sbi, start_blk + i);
 		struct f2fs_orphan_block *orphan_blk;
 
 		orphan_blk = (struct f2fs_orphan_block *)page_address(page);
@@ -698,7 +699,7 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
 	/* loop for each orphan inode entry and write them in Jornal block */
 	list_for_each_entry(orphan, head, list) {
 		if (!page) {
-			page = grab_meta_page(sbi, start_blk++);
+			page = f2fs_grab_meta_page(sbi, start_blk++);
 			orphan_blk =
 				(struct f2fs_orphan_block *)page_address(page);
 			memset(orphan_blk, 0, sizeof(*orphan_blk));
@@ -740,7 +741,7 @@ static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,
 	size_t crc_offset = 0;
 	__u32 crc = 0;
 
-	*cp_page = get_meta_page(sbi, cp_addr);
+	*cp_page = f2fs_get_meta_page(sbi, cp_addr);
 	*cp_block = (struct f2fs_checkpoint *)page_address(*cp_page);
 
 	crc_offset = le32_to_cpu((*cp_block)->checksum_offset);
@@ -793,7 +794,7 @@ invalid_cp1:
 	return NULL;
 }
 
-int get_valid_checkpoint(struct f2fs_sb_info *sbi)
+int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
 {
 	struct f2fs_checkpoint *cp_block;
 	struct f2fs_super_block *fsb = sbi->raw_super;
@@ -837,7 +838,7 @@ int get_valid_checkpoint(struct f2fs_sb_info *sbi)
 	memcpy(sbi->ckpt, cp_block, blk_size);
 
 	/* Sanity checking of checkpoint */
-	if (sanity_check_ckpt(sbi))
+	if (f2fs_sanity_check_ckpt(sbi))
 		goto free_fail_no_cp;
 
 	if (cur_page == cp1)
@@ -856,7 +857,7 @@ int get_valid_checkpoint(struct f2fs_sb_info *sbi)
 		void *sit_bitmap_ptr;
 		unsigned char *ckpt = (unsigned char *)sbi->ckpt;
 
-		cur_page = get_meta_page(sbi, cp_blk_no + i);
+		cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i);
 		sit_bitmap_ptr = page_address(cur_page);
 		memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
 		f2fs_put_page(cur_page, 1);
@@ -901,7 +902,7 @@ static void __remove_dirty_inode(struct inode *inode, enum inode_type type)
 	stat_dec_dirty_inode(F2FS_I_SB(inode), type);
 }
 
-void update_dirty_page(struct inode *inode, struct page *page)
+void f2fs_update_dirty_page(struct inode *inode, struct page *page)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 	enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
@@ -920,7 +921,7 @@ void update_dirty_page(struct inode *inode, struct page *page)
 	f2fs_trace_pid(page);
 }
 
-void remove_dirty_inode(struct inode *inode)
+void f2fs_remove_dirty_inode(struct inode *inode)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 	enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
@@ -937,7 +938,7 @@ void remove_dirty_inode(struct inode *inode)
 	spin_unlock(&sbi->inode_lock[type]);
 }
 
-int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type)
+int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type)
 {
 	struct list_head *head;
 	struct inode *inode;
@@ -1020,7 +1021,7 @@ int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi)
 
 			/* it's on eviction */
 			if (is_inode_flag_set(inode, FI_DIRTY_INODE))
-				update_inode_page(inode);
+				f2fs_update_inode_page(inode);
 			iput(inode);
 		}
 	}
@@ -1060,7 +1061,7 @@ retry_flush_dents:
 	/* write all the dirty dentry pages */
 	if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
 		f2fs_unlock_all(sbi);
-		err = sync_dirty_inodes(sbi, DIR_INODE);
+		err = f2fs_sync_dirty_inodes(sbi, DIR_INODE);
 		if (err)
 			goto out;
 		cond_resched();
@@ -1088,7 +1089,7 @@ retry_flush_nodes:
 
 	if (get_pages(sbi, F2FS_DIRTY_NODES)) {
 		up_write(&sbi->node_write);
-		err = sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO);
+		err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO);
 		if (err) {
 			up_write(&sbi->node_change);
 			f2fs_unlock_all(sbi);
@@ -1182,10 +1183,10 @@ static void commit_checkpoint(struct f2fs_sb_info *sbi,
 
 	/*
 	 * pagevec_lookup_tag and lock_page again will take
-	 * some extra time. Therefore, update_meta_pages and
-	 * sync_meta_pages are combined in this function.
+	 * some extra time. Therefore, f2fs_update_meta_pages and
+	 * f2fs_sync_meta_pages are combined in this function.
 	 */
-	struct page *page = grab_meta_page(sbi, blk_addr);
+	struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
 	int err;
 
 	memcpy(page_address(page), src, PAGE_SIZE);
@@ -1223,7 +1224,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 
 	/* Flush all the NAT/SIT pages */
 	while (get_pages(sbi, F2FS_DIRTY_META)) {
-		sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
+		f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
 		if (unlikely(f2fs_cp_error(sbi)))
 			return -EIO;
 	}
@@ -1252,7 +1253,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	}
 
 	/* 2 cp  + n data seg summary + orphan inode blocks */
-	data_sum_blocks = npages_for_summary_flush(sbi, false);
+	data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false);
 	spin_lock_irqsave(&sbi->cp_lock, flags);
 	if (data_sum_blocks < NR_CURSEG_DATA_TYPE)
 		__set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
@@ -1297,22 +1298,23 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 
 		blk = start_blk + sbi->blocks_per_seg - nm_i->nat_bits_blocks;
 		for (i = 0; i < nm_i->nat_bits_blocks; i++)
-			update_meta_page(sbi, nm_i->nat_bits +
+			f2fs_update_meta_page(sbi, nm_i->nat_bits +
 					(i << F2FS_BLKSIZE_BITS), blk + i);
 
 		/* Flush all the NAT BITS pages */
 		while (get_pages(sbi, F2FS_DIRTY_META)) {
-			sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
+			f2fs_sync_meta_pages(sbi, META, LONG_MAX,
+							FS_CP_META_IO);
 			if (unlikely(f2fs_cp_error(sbi)))
 				return -EIO;
 		}
 	}
 
 	/* write out checkpoint buffer at block 0 */
-	update_meta_page(sbi, ckpt, start_blk++);
+	f2fs_update_meta_page(sbi, ckpt, start_blk++);
 
 	for (i = 1; i < 1 + cp_payload_blks; i++)
-		update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
+		f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
 							start_blk++);
 
 	if (orphan_num) {
@@ -1320,7 +1322,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 		start_blk += orphan_blocks;
 	}
 
-	write_data_summaries(sbi, start_blk);
+	f2fs_write_data_summaries(sbi, start_blk);
 	start_blk += data_sum_blocks;
 
 	/* Record write statistics in the hot node summary */
@@ -1331,7 +1333,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written);
 
 	if (__remain_node_summaries(cpc->reason)) {
-		write_node_summaries(sbi, start_blk);
+		f2fs_write_node_summaries(sbi, start_blk);
 		start_blk += NR_CURSEG_NODE_TYPE;
 	}
 
@@ -1340,7 +1342,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	percpu_counter_set(&sbi->alloc_valid_block_count, 0);
 
 	/* Here, we have one bio having CP pack except cp pack 2 page */
-	sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
+	f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
 
 	/* wait for previous submitted meta pages writeback */
 	wait_on_all_pages_writeback(sbi);
@@ -1357,7 +1359,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	commit_checkpoint(sbi, ckpt, start_blk);
 	wait_on_all_pages_writeback(sbi);
 
-	release_ino_entry(sbi, false);
+	f2fs_release_ino_entry(sbi, false);
 
 	if (unlikely(f2fs_cp_error(sbi)))
 		return -EIO;
@@ -1382,7 +1384,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 /*
  * We guarantee that this checkpoint procedure will not fail.
  */
-int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
+int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 {
 	struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
 	unsigned long long ckpt_ver;
@@ -1415,7 +1417,7 @@ int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 
 	/* this is the case of multiple fstrims without any changes */
 	if (cpc->reason & CP_DISCARD) {
-		if (!exist_trim_candidates(sbi, cpc)) {
+		if (!f2fs_exist_trim_candidates(sbi, cpc)) {
 			unblock_operations(sbi);
 			goto out;
 		}
@@ -1423,8 +1425,8 @@ int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 		if (NM_I(sbi)->dirty_nat_cnt == 0 &&
 				SIT_I(sbi)->dirty_sentries == 0 &&
 				prefree_segments(sbi) == 0) {
-			flush_sit_entries(sbi, cpc);
-			clear_prefree_segments(sbi, cpc);
+			f2fs_flush_sit_entries(sbi, cpc);
+			f2fs_clear_prefree_segments(sbi, cpc);
 			unblock_operations(sbi);
 			goto out;
 		}
@@ -1439,15 +1441,15 @@ int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);
 
 	/* write cached NAT/SIT entries to NAT/SIT area */
-	flush_nat_entries(sbi, cpc);
-	flush_sit_entries(sbi, cpc);
+	f2fs_flush_nat_entries(sbi, cpc);
+	f2fs_flush_sit_entries(sbi, cpc);
 
 	/* unlock all the fs_lock[] in do_checkpoint() */
 	err = do_checkpoint(sbi, cpc);
 	if (err)
-		release_discard_addrs(sbi);
+		f2fs_release_discard_addrs(sbi);
 	else
-		clear_prefree_segments(sbi, cpc);
+		f2fs_clear_prefree_segments(sbi, cpc);
 
 	unblock_operations(sbi);
 	stat_inc_cp_count(sbi->stat_info);
@@ -1464,7 +1466,7 @@ out:
 	return err;
 }
 
-void init_ino_entry_info(struct f2fs_sb_info *sbi)
+void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi)
 {
 	int i;
 
@@ -1482,23 +1484,23 @@ void init_ino_entry_info(struct f2fs_sb_info *sbi)
 				F2FS_ORPHANS_PER_BLOCK;
 }
 
-int __init create_checkpoint_caches(void)
+int __init f2fs_create_checkpoint_caches(void)
 {
 	ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry",
 			sizeof(struct ino_entry));
 	if (!ino_entry_slab)
 		return -ENOMEM;
-	inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",
+	f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",
 			sizeof(struct inode_entry));
-	if (!inode_entry_slab) {
+	if (!f2fs_inode_entry_slab) {
 		kmem_cache_destroy(ino_entry_slab);
 		return -ENOMEM;
 	}
 	return 0;
 }
 
-void destroy_checkpoint_caches(void)
+void f2fs_destroy_checkpoint_caches(void)
 {
 	kmem_cache_destroy(ino_entry_slab);
-	kmem_cache_destroy(inode_entry_slab);
+	kmem_cache_destroy(f2fs_inode_entry_slab);
 }
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 10aa4d9a4b7c..a2e30c403ef2 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -247,7 +247,7 @@ static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr,
 	} else {
 		bio->bi_end_io = f2fs_write_end_io;
 		bio->bi_private = sbi;
-		bio->bi_write_hint = io_type_to_rw_hint(sbi, type, temp);
+		bio->bi_write_hint = f2fs_io_type_to_rw_hint(sbi, type, temp);
 	}
 	if (wbc)
 		wbc_init_bio(wbc, bio);
@@ -604,7 +604,7 @@ static void __set_data_blkaddr(struct dnode_of_data *dn)
  *  ->node_page
  *    update block addresses in the node page
  */
-void set_data_blkaddr(struct dnode_of_data *dn)
+void f2fs_set_data_blkaddr(struct dnode_of_data *dn)
 {
 	f2fs_wait_on_page_writeback(dn->node_page, NODE, true);
 	__set_data_blkaddr(dn);
@@ -615,12 +615,12 @@ void set_data_blkaddr(struct dnode_of_data *dn)
 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr)
 {
 	dn->data_blkaddr = blkaddr;
-	set_data_blkaddr(dn);
+	f2fs_set_data_blkaddr(dn);
 	f2fs_update_extent_cache(dn);
 }
 
 /* dn->ofs_in_node will be returned with up-to-date last block pointer */
-int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count)
+int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
 	int err;
@@ -654,12 +654,12 @@ int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count)
 }
 
 /* Should keep dn->ofs_in_node unchanged */
-int reserve_new_block(struct dnode_of_data *dn)
+int f2fs_reserve_new_block(struct dnode_of_data *dn)
 {
 	unsigned int ofs_in_node = dn->ofs_in_node;
 	int ret;
 
-	ret = reserve_new_blocks(dn, 1);
+	ret = f2fs_reserve_new_blocks(dn, 1);
 	dn->ofs_in_node = ofs_in_node;
 	return ret;
 }
@@ -669,12 +669,12 @@ int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index)
 	bool need_put = dn->inode_page ? false : true;
 	int err;
 
-	err = get_dnode_of_data(dn, index, ALLOC_NODE);
+	err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE);
 	if (err)
 		return err;
 
 	if (dn->data_blkaddr == NULL_ADDR)
-		err = reserve_new_block(dn);
+		err = f2fs_reserve_new_block(dn);
 	if (err || need_put)
 		f2fs_put_dnode(dn);
 	return err;
@@ -693,7 +693,7 @@ int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index)
 	return f2fs_reserve_block(dn, index);
 }
 
-struct page *get_read_data_page(struct inode *inode, pgoff_t index,
+struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
 						int op_flags, bool for_write)
 {
 	struct address_space *mapping = inode->i_mapping;
@@ -712,7 +712,7 @@ struct page *get_read_data_page(struct inode *inode, pgoff_t index,
 	}
 
 	set_new_dnode(&dn, inode, NULL, NULL, 0);
-	err = get_dnode_of_data(&dn, index, LOOKUP_NODE);
+	err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
 	if (err)
 		goto put_err;
 	f2fs_put_dnode(&dn);
@@ -731,7 +731,8 @@ got_it:
 	 * A new dentry page is allocated but not able to be written, since its
 	 * new inode page couldn't be allocated due to -ENOSPC.
 	 * In such the case, its blkaddr can be remained as NEW_ADDR.
-	 * see, f2fs_add_link -> get_new_data_page -> init_inode_metadata.
+	 * see, f2fs_add_link -> f2fs_get_new_data_page ->
+	 * f2fs_init_inode_metadata.
 	 */
 	if (dn.data_blkaddr == NEW_ADDR) {
 		zero_user_segment(page, 0, PAGE_SIZE);
@@ -751,7 +752,7 @@ put_err:
 	return ERR_PTR(err);
 }
 
-struct page *find_data_page(struct inode *inode, pgoff_t index)
+struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index)
 {
 	struct address_space *mapping = inode->i_mapping;
 	struct page *page;
@@ -761,7 +762,7 @@ struct page *find_data_page(struct inode *inode, pgoff_t index)
 		return page;
 	f2fs_put_page(page, 0);
 
-	page = get_read_data_page(inode, index, 0, false);
+	page = f2fs_get_read_data_page(inode, index, 0, false);
 	if (IS_ERR(page))
 		return page;
 
@@ -781,13 +782,13 @@ struct page *find_data_page(struct inode *inode, pgoff_t index)
  * Because, the callers, functions in dir.c and GC, should be able to know
  * whether this page exists or not.
  */
-struct page *get_lock_data_page(struct inode *inode, pgoff_t index,
+struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
 							bool for_write)
 {
 	struct address_space *mapping = inode->i_mapping;
 	struct page *page;
 repeat:
-	page = get_read_data_page(inode, index, 0, for_write);
+	page = f2fs_get_read_data_page(inode, index, 0, for_write);
 	if (IS_ERR(page))
 		return page;
 
@@ -813,7 +814,7 @@ repeat:
  * Note that, ipage is set only by make_empty_dir, and if any error occur,
  * ipage should be released by this function.
  */
-struct page *get_new_data_page(struct inode *inode,
+struct page *f2fs_get_new_data_page(struct inode *inode,
 		struct page *ipage, pgoff_t index, bool new_i_size)
 {
 	struct address_space *mapping = inode->i_mapping;
@@ -852,7 +853,7 @@ struct page *get_new_data_page(struct inode *inode,
 
 		/* if ipage exists, blkaddr should be NEW_ADDR */
 		f2fs_bug_on(F2FS_I_SB(inode), ipage);
-		page = get_lock_data_page(inode, index, true);
+		page = f2fs_get_lock_data_page(inode, index, true);
 		if (IS_ERR(page))
 			return page;
 	}
@@ -884,15 +885,15 @@ static int __allocate_data_block(struct dnode_of_data *dn, int seg_type)
 		return err;
 
 alloc:
-	get_node_info(sbi, dn->nid, &ni);
+	f2fs_get_node_info(sbi, dn->nid, &ni);
 	set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version);
 
-	allocate_data_block(sbi, NULL, dn->data_blkaddr, &dn->data_blkaddr,
+	f2fs_allocate_data_block(sbi, NULL, dn->data_blkaddr, &dn->data_blkaddr,
 					&sum, seg_type, NULL, false);
-	set_data_blkaddr(dn);
+	f2fs_set_data_blkaddr(dn);
 
 	/* update i_size */
-	fofs = start_bidx_of_node(ofs_of_node(dn->node_page), dn->inode) +
+	fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), dn->inode) +
 							dn->ofs_in_node;
 	if (i_size_read(dn->inode) < ((loff_t)(fofs + 1) << PAGE_SHIFT))
 		f2fs_i_size_write(dn->inode,
@@ -930,7 +931,7 @@ int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from)
 	map.m_seg_type = NO_CHECK_TYPE;
 
 	if (direct_io) {
-		map.m_seg_type = rw_hint_to_seg_type(iocb->ki_hint);
+		map.m_seg_type = f2fs_rw_hint_to_seg_type(iocb->ki_hint);
 		flag = f2fs_force_buffered_io(inode, WRITE) ?
 					F2FS_GET_BLOCK_PRE_AIO :
 					F2FS_GET_BLOCK_PRE_DIO;
@@ -1020,7 +1021,7 @@ next_dnode:
 
 	/* When reading holes, we need its node page */
 	set_new_dnode(&dn, inode, NULL, NULL, 0);
-	err = get_dnode_of_data(&dn, pgofs, mode);
+	err = f2fs_get_dnode_of_data(&dn, pgofs, mode);
 	if (err) {
 		if (flag == F2FS_GET_BLOCK_BMAP)
 			map->m_pblk = 0;
@@ -1028,10 +1029,10 @@ next_dnode:
 			err = 0;
 			if (map->m_next_pgofs)
 				*map->m_next_pgofs =
-					get_next_page_offset(&dn, pgofs);
+					f2fs_get_next_page_offset(&dn, pgofs);
 			if (map->m_next_extent)
 				*map->m_next_extent =
-					get_next_page_offset(&dn, pgofs);
+					f2fs_get_next_page_offset(&dn, pgofs);
 		}
 		goto unlock_out;
 	}
@@ -1117,7 +1118,7 @@ skip:
 			(pgofs == end || dn.ofs_in_node == end_offset)) {
 
 		dn.ofs_in_node = ofs_in_node;
-		err = reserve_new_blocks(&dn, prealloc);
+		err = f2fs_reserve_new_blocks(&dn, prealloc);
 		if (err)
 			goto sync_out;
 
@@ -1236,7 +1237,7 @@ static int get_data_block_dio(struct inode *inode, sector_t iblock,
 {
 	return __get_data_block(inode, iblock, bh_result, create,
 						F2FS_GET_BLOCK_DEFAULT, NULL,
-						rw_hint_to_seg_type(
+						f2fs_rw_hint_to_seg_type(
 							inode->i_write_hint));
 }
 
@@ -1281,7 +1282,7 @@ static int f2fs_xattr_fiemap(struct inode *inode,
 		if (!page)
 			return -ENOMEM;
 
-		get_node_info(sbi, inode->i_ino, &ni);
+		f2fs_get_node_info(sbi, inode->i_ino, &ni);
 
 		phys = (__u64)blk_to_logical(inode, ni.blk_addr);
 		offset = offsetof(struct f2fs_inode, i_addr) +
@@ -1308,7 +1309,7 @@ static int f2fs_xattr_fiemap(struct inode *inode,
 		if (!page)
 			return -ENOMEM;
 
-		get_node_info(sbi, xnid, &ni);
+		f2fs_get_node_info(sbi, xnid, &ni);
 
 		phys = (__u64)blk_to_logical(inode, ni.blk_addr);
 		len = inode->i_sb->s_blocksize;
@@ -1612,12 +1613,12 @@ static inline bool check_inplace_update_policy(struct inode *inode,
 
 	if (policy & (0x1 << F2FS_IPU_FORCE))
 		return true;
-	if (policy & (0x1 << F2FS_IPU_SSR) && need_SSR(sbi))
+	if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi))
 		return true;
 	if (policy & (0x1 << F2FS_IPU_UTIL) &&
 			utilization(sbi) > SM_I(sbi)->min_ipu_util)
 		return true;
-	if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && need_SSR(sbi) &&
+	if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) &&
 			utilization(sbi) > SM_I(sbi)->min_ipu_util)
 		return true;
 
@@ -1638,7 +1639,7 @@ static inline bool check_inplace_update_policy(struct inode *inode,
 	return false;
 }
 
-bool should_update_inplace(struct inode *inode, struct f2fs_io_info *fio)
+bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio)
 {
 	if (f2fs_is_pinned_file(inode))
 		return true;
@@ -1650,7 +1651,7 @@ bool should_update_inplace(struct inode *inode, struct f2fs_io_info *fio)
 	return check_inplace_update_policy(inode, fio);
 }
 
-bool should_update_outplace(struct inode *inode, struct f2fs_io_info *fio)
+bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 
@@ -1673,13 +1674,13 @@ static inline bool need_inplace_update(struct f2fs_io_info *fio)
 {
 	struct inode *inode = fio->page->mapping->host;
 
-	if (should_update_outplace(inode, fio))
+	if (f2fs_should_update_outplace(inode, fio))
 		return false;
 
-	return should_update_inplace(inode, fio);
+	return f2fs_should_update_inplace(inode, fio);
 }
 
-int do_write_data_page(struct f2fs_io_info *fio)
+int f2fs_do_write_data_page(struct f2fs_io_info *fio)
 {
 	struct page *page = fio->page;
 	struct inode *inode = page->mapping->host;
@@ -1704,7 +1705,7 @@ int do_write_data_page(struct f2fs_io_info *fio)
 	if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi))
 		return -EAGAIN;
 
-	err = get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
+	err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
 	if (err)
 		goto out;
 
@@ -1731,7 +1732,7 @@ got_it:
 		f2fs_put_dnode(&dn);
 		if (fio->need_lock == LOCK_REQ)
 			f2fs_unlock_op(fio->sbi);
-		err = rewrite_data_page(fio);
+		err = f2fs_inplace_write_data(fio);
 		trace_f2fs_do_write_data_page(fio->page, IPU);
 		set_inode_flag(inode, FI_UPDATE_WRITE);
 		return err;
@@ -1753,7 +1754,7 @@ got_it:
 	ClearPageError(page);
 
 	/* LFS mode write path */
-	write_data_page(&dn, fio);
+	f2fs_outplace_write_data(&dn, fio);
 	trace_f2fs_do_write_data_page(page, OPU);
 	set_inode_flag(inode, FI_APPEND_WRITE);
 	if (page->index == 0)
@@ -1829,13 +1830,13 @@ write:
 	/* we should not write 0'th page having journal header */
 	if (f2fs_is_volatile_file(inode) && (!page->index ||
 			(!wbc->for_reclaim &&
-			available_free_memory(sbi, BASE_CHECK))))
+			f2fs_available_free_memory(sbi, BASE_CHECK))))
 		goto redirty_out;
 
 	/* Dentry blocks are controlled by checkpoint */
 	if (S_ISDIR(inode->i_mode)) {
 		fio.need_lock = LOCK_DONE;
-		err = do_write_data_page(&fio);
+		err = f2fs_do_write_data_page(&fio);
 		goto done;
 	}
 
@@ -1854,10 +1855,10 @@ write:
 	}
 
 	if (err == -EAGAIN) {
-		err = do_write_data_page(&fio);
+		err = f2fs_do_write_data_page(&fio);
 		if (err == -EAGAIN) {
 			fio.need_lock = LOCK_REQ;
-			err = do_write_data_page(&fio);
+			err = f2fs_do_write_data_page(&fio);
 		}
 	}
 
@@ -1882,7 +1883,7 @@ out:
 	if (wbc->for_reclaim) {
 		f2fs_submit_merged_write_cond(sbi, inode, 0, page->index, DATA);
 		clear_inode_flag(inode, FI_HOT_DATA);
-		remove_dirty_inode(inode);
+		f2fs_remove_dirty_inode(inode);
 		submitted = NULL;
 	}
 
@@ -2095,7 +2096,7 @@ static int __f2fs_write_data_pages(struct address_space *mapping,
 
 	if (S_ISDIR(inode->i_mode) && wbc->sync_mode == WB_SYNC_NONE &&
 			get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) &&
-			available_free_memory(sbi, DIRTY_DENTS))
+			f2fs_available_free_memory(sbi, DIRTY_DENTS))
 		goto skip_write;
 
 	/* skip writing during file defragment */
@@ -2121,7 +2122,7 @@ static int __f2fs_write_data_pages(struct address_space *mapping,
 	 * to detect pending bios.
 	 */
 
-	remove_dirty_inode(inode);
+	f2fs_remove_dirty_inode(inode);
 	return ret;
 
 skip_write:
@@ -2148,7 +2149,7 @@ static void f2fs_write_failed(struct address_space *mapping, loff_t to)
 	if (to > i_size) {
 		down_write(&F2FS_I(inode)->i_mmap_sem);
 		truncate_pagecache(inode, i_size);
-		truncate_blocks(inode, i_size, true);
+		f2fs_truncate_blocks(inode, i_size, true);
 		up_write(&F2FS_I(inode)->i_mmap_sem);
 	}
 }
@@ -2180,7 +2181,7 @@ static int prepare_write_begin(struct f2fs_sb_info *sbi,
 	}
 restart:
 	/* check inline_data */
-	ipage = get_node_page(sbi, inode->i_ino);
+	ipage = f2fs_get_node_page(sbi, inode->i_ino);
 	if (IS_ERR(ipage)) {
 		err = PTR_ERR(ipage);
 		goto unlock_out;
@@ -2190,7 +2191,7 @@ restart:
 
 	if (f2fs_has_inline_data(inode)) {
 		if (pos + len <= MAX_INLINE_DATA(inode)) {
-			read_inline_data(page, ipage);
+			f2fs_do_read_inline_data(page, ipage);
 			set_inode_flag(inode, FI_DATA_EXIST);
 			if (inode->i_nlink)
 				set_inline_node(ipage);
@@ -2208,7 +2209,7 @@ restart:
 			dn.data_blkaddr = ei.blk + index - ei.fofs;
 		} else {
 			/* hole case */
-			err = get_dnode_of_data(&dn, index, LOOKUP_NODE);
+			err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
 			if (err || dn.data_blkaddr == NULL_ADDR) {
 				f2fs_put_dnode(&dn);
 				__do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO,
@@ -2245,7 +2246,7 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping,
 	trace_f2fs_write_begin(inode, pos, len, flags);
 
 	if (f2fs_is_atomic_file(inode) &&
-			!available_free_memory(sbi, INMEM_PAGES)) {
+			!f2fs_available_free_memory(sbi, INMEM_PAGES)) {