[linux-2.6-block.git] / fs / f2fs / inode.c

/*
 * fs/f2fs/inode.c
 *
 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
 *             http://www.samsung.com/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/fs.h>
#include <linux/f2fs_fs.h>
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include <linux/bitops.h>

#include "f2fs.h"
#include "node.h"

#include <trace/events/f2fs.h>

void f2fs_set_inode_flags(struct inode *inode)
{
	unsigned int flags = F2FS_I(inode)->i_flags;
	unsigned int new_fl = 0;

	if (flags & FS_SYNC_FL)
		new_fl |= S_SYNC;
	if (flags & FS_APPEND_FL)
		new_fl |= S_APPEND;
	if (flags & FS_IMMUTABLE_FL)
		new_fl |= S_IMMUTABLE;
	if (flags & FS_NOATIME_FL)
		new_fl |= S_NOATIME;
	if (flags & FS_DIRSYNC_FL)
		new_fl |= S_DIRSYNC;
	set_mask_bits(&inode->i_flags,
			S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC, new_fl);
}

static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
{
	if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
			S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
		if (ri->i_addr[0])
			inode->i_rdev =
				old_decode_dev(le32_to_cpu(ri->i_addr[0]));
		else
			inode->i_rdev =
				new_decode_dev(le32_to_cpu(ri->i_addr[1]));
	}
}

static bool __written_first_block(struct f2fs_inode *ri)
{
	block_t addr = le32_to_cpu(ri->i_addr[0]);

	if (addr != NEW_ADDR && addr != NULL_ADDR)
		return true;
	return false;
}

static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
{
	if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
		if (old_valid_dev(inode->i_rdev)) {
			ri->i_addr[0] =
				cpu_to_le32(old_encode_dev(inode->i_rdev));
			ri->i_addr[1] = 0;
		} else {
			ri->i_addr[0] = 0;
			ri->i_addr[1] =
				cpu_to_le32(new_encode_dev(inode->i_rdev));
			ri->i_addr[2] = 0;
		}
	}
}

static void __recover_inline_status(struct inode *inode, struct page *ipage)
{
	void *inline_data = inline_data_addr(ipage);
	__le32 *start = inline_data;
	__le32 *end = start + MAX_INLINE_DATA / sizeof(__le32);

	while (start < end) {
		if (*start++) {
			f2fs_wait_on_page_writeback(ipage, NODE);

			set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
			set_raw_inline(F2FS_I(inode), F2FS_INODE(ipage));
			set_page_dirty(ipage);
			return;
		}
	}
	return;
}

static int do_read_inode(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	struct f2fs_inode_info *fi = F2FS_I(inode);
	struct page *node_page;
	struct f2fs_inode *ri;

	/* Check if ino is within scope */
	if (check_nid_range(sbi, inode->i_ino)) {
		f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
			 (unsigned long) inode->i_ino);
		WARN_ON(1);
		return -EINVAL;
	}

	node_page = get_node_page(sbi, inode->i_ino);
	if (IS_ERR(node_page))
		return PTR_ERR(node_page);

	ri = F2FS_INODE(node_page);

	inode->i_mode = le16_to_cpu(ri->i_mode);
	i_uid_write(inode, le32_to_cpu(ri->i_uid));
	i_gid_write(inode, le32_to_cpu(ri->i_gid));
	set_nlink(inode, le32_to_cpu(ri->i_links));
	inode->i_size = le64_to_cpu(ri->i_size);
	inode->i_blocks = le64_to_cpu(ri->i_blocks);

	inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
	inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
	inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
	inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
	inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
	inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
	inode->i_generation = le32_to_cpu(ri->i_generation);

	fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
	fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
	fi->i_flags = le32_to_cpu(ri->i_flags);
	fi->flags = 0;
	fi->i_advise = ri->i_advise;
	fi->i_pino = le32_to_cpu(ri->i_pino);
	fi->i_dir_level = ri->i_dir_level;

	f2fs_init_extent_cache(inode, &ri->i_ext);

	get_inline_info(fi, ri);

	/* check data exist */
	if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
		__recover_inline_status(inode, node_page);

	/* get rdev by using inline_info */
	__get_inode_rdev(inode, ri);

	if (__written_first_block(ri))
		set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);

	f2fs_put_page(node_page, 1);

	stat_inc_inline_inode(inode);
	stat_inc_inline_dir(inode);

	return 0;
}

struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
{
	struct f2fs_sb_info *sbi = F2FS_SB(sb);
	struct inode *inode;
	int ret = 0;

	inode = iget_locked(sb, ino);
	if (!inode)
		return ERR_PTR(-ENOMEM);

	if (!(inode->i_state & I_NEW)) {
		trace_f2fs_iget(inode);
		return inode;
	}
	if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
		goto make_now;

	ret = do_read_inode(inode);
	if (ret)
		goto bad_inode;
make_now:
	if (ino == F2FS_NODE_INO(sbi)) {
		inode->i_mapping->a_ops = &f2fs_node_aops;
		mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	} else if (ino == F2FS_META_INO(sbi)) {
		inode->i_mapping->a_ops = &f2fs_meta_aops;
		mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	} else if (S_ISREG(inode->i_mode)) {
		inode->i_op = &f2fs_file_inode_operations;
		inode->i_fop = &f2fs_file_operations;
		inode->i_mapping->a_ops = &f2fs_dblock_aops;
	} else if (S_ISDIR(inode->i_mode)) {
		inode->i_op = &f2fs_dir_inode_operations;
		inode->i_fop = &f2fs_dir_operations;
		inode->i_mapping->a_ops = &f2fs_dblock_aops;
		mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
	} else if (S_ISLNK(inode->i_mode)) {
		if (f2fs_encrypted_inode(inode))
			inode->i_op = &f2fs_encrypted_symlink_inode_operations;
		else
			inode->i_op = &f2fs_symlink_inode_operations;
		inode->i_mapping->a_ops = &f2fs_dblock_aops;
	} else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
			S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
		inode->i_op = &f2fs_special_inode_operations;
		init_special_inode(inode, inode->i_mode, inode->i_rdev);
	} else {
		ret = -EIO;
		goto bad_inode;
	}
	unlock_new_inode(inode);
	trace_f2fs_iget(inode);
	return inode;

bad_inode:
	iget_failed(inode);
	trace_f2fs_iget_exit(inode, ret);
	return ERR_PTR(ret);
}

void update_inode(struct inode *inode, struct page *node_page)
{
	struct f2fs_inode *ri;

	f2fs_wait_on_page_writeback(node_page, NODE);

	ri = F2FS_INODE(node_page);

	ri->i_mode = cpu_to_le16(inode->i_mode);
	ri->i_advise = F2FS_I(inode)->i_advise;
	ri->i_uid = cpu_to_le32(i_uid_read(inode));
	ri->i_gid = cpu_to_le32(i_gid_read(inode));
	ri->i_links = cpu_to_le32(inode->i_nlink);
	ri->i_size = cpu_to_le64(i_size_read(inode));
	ri->i_blocks = cpu_to_le64(inode->i_blocks);

	read_lock(&F2FS_I(inode)->ext_lock);
	set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
	read_unlock(&F2FS_I(inode)->ext_lock);

	set_raw_inline(F2FS_I(inode), ri);

	ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
	ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
	ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
	ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
	ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
	ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
	ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
	ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
	ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
	ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
	ri->i_generation = cpu_to_le32(inode->i_generation);
	ri->i_dir_level = F2FS_I(inode)->i_dir_level;

	__set_inode_rdev(inode, ri);
	set_cold_node(inode, node_page);
	set_page_dirty(node_page);

	clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
}

void update_inode_page(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	struct page *node_page;
retry:
	node_page = get_node_page(sbi, inode->i_ino);
	if (IS_ERR(node_page)) {
		int err = PTR_ERR(node_page);
		if (err == -ENOMEM) {
			cond_resched();
			goto retry;
		} else if (err != -ENOENT) {
			f2fs_stop_checkpoint(sbi);
		}
		return;
	}
	update_inode(inode, node_page);
	f2fs_put_page(node_page, 1);
}

int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);

	if (inode->i_ino == F2FS_NODE_INO(sbi) ||
			inode->i_ino == F2FS_META_INO(sbi))
		return 0;

	if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
		return 0;

	/*
	 * We need to lock here to prevent from producing dirty node pages
	 * during the urgent cleaning time when runing out of free sections.
	 */
	f2fs_lock_op(sbi);
	update_inode_page(inode);
	f2fs_unlock_op(sbi);

	if (wbc)
		f2fs_balance_fs(sbi);

	return 0;
}

/*
 * Called at the last iput() if i_nlink is zero
 */
void f2fs_evict_inode(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	nid_t xnid = F2FS_I(inode)->i_xattr_nid;

	/* some remained atomic pages should discarded */
	if (f2fs_is_atomic_file(inode))
		commit_inmem_pages(inode, true);

	trace_f2fs_evict_inode(inode);
	truncate_inode_pages_final(&inode->i_data);

	if (inode->i_ino == F2FS_NODE_INO(sbi) ||
			inode->i_ino == F2FS_META_INO(sbi))
		goto out_clear;

	f2fs_bug_on(sbi, get_dirty_pages(inode));
	remove_dirty_dir_inode(inode);

	if (inode->i_nlink || is_bad_inode(inode))
		goto no_delete;

	sb_start_intwrite(inode->i_sb);
	set_inode_flag(F2FS_I(inode), FI_NO_ALLOC);
	i_size_write(inode, 0);

	if (F2FS_HAS_BLOCKS(inode))
		f2fs_truncate(inode);

	f2fs_lock_op(sbi);
	remove_inode_page(inode);
	f2fs_unlock_op(sbi);

	sb_end_intwrite(inode->i_sb);
no_delete:
	stat_dec_inline_dir(inode);
	stat_dec_inline_inode(inode);

	/* update extent info in inode */
	if (inode->i_nlink)
		f2fs_preserve_extent_tree(inode);
	f2fs_destroy_extent_tree(inode);

	invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
	if (xnid)
		invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
	if (is_inode_flag_set(F2FS_I(inode), FI_APPEND_WRITE))
		add_dirty_inode(sbi, inode->i_ino, APPEND_INO);
	if (is_inode_flag_set(F2FS_I(inode), FI_UPDATE_WRITE))
		add_dirty_inode(sbi, inode->i_ino, UPDATE_INO);
out_clear:
#ifdef CONFIG_F2FS_FS_ENCRYPTION
	if (F2FS_I(inode)->i_crypt_info)
		f2fs_free_encryption_info(inode, F2FS_I(inode)->i_crypt_info);
#endif
	clear_inode(inode);
}

/* caller should call f2fs_lock_op() */
void handle_failed_inode(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);

	clear_nlink(inode);
	make_bad_inode(inode);
	unlock_new_inode(inode);

	i_size_write(inode, 0);
	if (F2FS_HAS_BLOCKS(inode))
		f2fs_truncate(inode);

	remove_inode_page(inode);

	clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
	clear_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY);
	alloc_nid_failed(sbi, inode->i_ino);
	f2fs_unlock_op(sbi);

	/* iput will drop the inode object */
	iput(inode);
}
Commit	Line	Data
0a8165d7	1	/*
19f99cee JK	2	* fs/f2fs/inode.c
	3	*
	4	* Copyright (c) 2012 Samsung Electronics Co., Ltd.
	5	* http://www.samsung.com/
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11	#include <linux/fs.h>
	12	#include <linux/f2fs_fs.h>
	13	#include <linux/buffer_head.h>
	14	#include <linux/writeback.h>
8abfb36a	15	#include <linux/bitops.h>
19f99cee JK	16
	17	#include "f2fs.h"
	18	#include "node.h"
	19
a2a4a7e4 NJ	20	#include <trace/events/f2fs.h>
a2a4a7e4 NJ	21
19f99cee JK	22	void f2fs_set_inode_flags(struct inode *inode)
	23	{
	24	unsigned int flags = F2FS_I(inode)->i_flags;
8abfb36a	25	unsigned int new_fl = 0;
19f99cee JK	26
19f99cee JK	27	if (flags & FS_SYNC_FL)
8abfb36a	28	new_fl \|= S_SYNC;
19f99cee	29	if (flags & FS_APPEND_FL)
8abfb36a	30	new_fl \|= S_APPEND;
19f99cee	31	if (flags & FS_IMMUTABLE_FL)
8abfb36a	32	new_fl \|= S_IMMUTABLE;
19f99cee	33	if (flags & FS_NOATIME_FL)
8abfb36a	34	new_fl \|= S_NOATIME;
19f99cee	35	if (flags & FS_DIRSYNC_FL)
8abfb36a ZZ	36	new_fl \|= S_DIRSYNC;
	37	set_mask_bits(&inode->i_flags,
	38	S_SYNC\|S_APPEND\|S_IMMUTABLE\|S_NOATIME\|S_DIRSYNC, new_fl);
19f99cee JK	39	}
19f99cee JK	40
3d1e3807 JK	41	static void __get_inode_rdev(struct inode inode, struct f2fs_inode ri)
	42	{
	43	if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode) \|\|
	44	S_ISFIFO(inode->i_mode) \|\| S_ISSOCK(inode->i_mode)) {
	45	if (ri->i_addr[0])
6c311ec6 CF	46	inode->i_rdev =
6c311ec6 CF	47	old_decode_dev(le32_to_cpu(ri->i_addr[0]));
3d1e3807	48	else
6c311ec6 CF	49	inode->i_rdev =
6c311ec6 CF	50	new_decode_dev(le32_to_cpu(ri->i_addr[1]));
3d1e3807 JK	51	}
	52	}
	53
3c6c2beb JK	54	static bool __written_first_block(struct f2fs_inode *ri)
3c6c2beb JK	55	{
adad81ed JK	56	block_t addr = le32_to_cpu(ri->i_addr[0]);
	57
	58	if (addr != NEW_ADDR && addr != NULL_ADDR)
3c6c2beb JK	59	return true;
	60	return false;
	61	}
	62
3d1e3807 JK	63	static void __set_inode_rdev(struct inode inode, struct f2fs_inode ri)
	64	{
	65	if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode)) {
	66	if (old_valid_dev(inode->i_rdev)) {
6c311ec6 CF	67	ri->i_addr[0] =
6c311ec6 CF	68	cpu_to_le32(old_encode_dev(inode->i_rdev));
3d1e3807 JK	69	ri->i_addr[1] = 0;
	70	} else {
	71	ri->i_addr[0] = 0;
6c311ec6 CF	72	ri->i_addr[1] =
6c311ec6 CF	73	cpu_to_le32(new_encode_dev(inode->i_rdev));
3d1e3807 JK	74	ri->i_addr[2] = 0;
	75	}
	76	}
	77	}
	78
9e5ba77f	79	static void __recover_inline_status(struct inode inode, struct page ipage)
b3d208f9 JK	80	{
b3d208f9 JK	81	void *inline_data = inline_data_addr(ipage);
9e5ba77f CY	82	__le32 *start = inline_data;
9e5ba77f CY	83	__le32 *end = start + MAX_INLINE_DATA / sizeof(__le32);
b3d208f9	84
9e5ba77f CY	85	while (start < end) {
	86	if (*start++) {
	87	f2fs_wait_on_page_writeback(ipage, NODE);
b3d208f9	88
9e5ba77f CY	89	set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
	90	set_raw_inline(F2FS_I(inode), F2FS_INODE(ipage));
	91	set_page_dirty(ipage);
	92	return;
	93	}
b3d208f9	94	}
9e5ba77f	95	return;
b3d208f9 JK	96	}
b3d208f9 JK	97
19f99cee JK	98	static int do_read_inode(struct inode *inode)
19f99cee JK	99	{
4081363f	100	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
19f99cee JK	101	struct f2fs_inode_info *fi = F2FS_I(inode);
19f99cee JK	102	struct page *node_page;
19f99cee JK	103	struct f2fs_inode *ri;
	104
	105	/* Check if ino is within scope */
064e0823 NJ	106	if (check_nid_range(sbi, inode->i_ino)) {
	107	f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
	108	(unsigned long) inode->i_ino);
d6b7d4b3	109	WARN_ON(1);
064e0823 NJ	110	return -EINVAL;
064e0823 NJ	111	}
19f99cee JK	112
	113	node_page = get_node_page(sbi, inode->i_ino);
	114	if (IS_ERR(node_page))
	115	return PTR_ERR(node_page);
	116
58bfaf44	117	ri = F2FS_INODE(node_page);
19f99cee JK	118
	119	inode->i_mode = le16_to_cpu(ri->i_mode);
	120	i_uid_write(inode, le32_to_cpu(ri->i_uid));
	121	i_gid_write(inode, le32_to_cpu(ri->i_gid));
	122	set_nlink(inode, le32_to_cpu(ri->i_links));
	123	inode->i_size = le64_to_cpu(ri->i_size);
	124	inode->i_blocks = le64_to_cpu(ri->i_blocks);
	125
	126	inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
	127	inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
	128	inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
	129	inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
	130	inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
	131	inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
	132	inode->i_generation = le32_to_cpu(ri->i_generation);
	133
	134	fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
	135	fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
	136	fi->i_flags = le32_to_cpu(ri->i_flags);
	137	fi->flags = 0;
19f99cee	138	fi->i_advise = ri->i_advise;
6666e6aa	139	fi->i_pino = le32_to_cpu(ri->i_pino);
38431545	140	fi->i_dir_level = ri->i_dir_level;
3d1e3807	141
028a41e8	142	f2fs_init_extent_cache(inode, &ri->i_ext);
0c872e2d	143
444c580f	144	get_inline_info(fi, ri);
3d1e3807	145
b3d208f9 JK	146	/* check data exist */
b3d208f9 JK	147	if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
9e5ba77f	148	__recover_inline_status(inode, node_page);
b3d208f9	149
3d1e3807 JK	150	/* get rdev by using inline_info */
	151	__get_inode_rdev(inode, ri);
	152
3c6c2beb JK	153	if (__written_first_block(ri))
	154	set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
	155
19f99cee	156	f2fs_put_page(node_page, 1);
9d1015dd JK	157
	158	stat_inc_inline_inode(inode);
	159	stat_inc_inline_dir(inode);
	160
9e5ba77f	161	return 0;
19f99cee JK	162	}
	163
	164	struct inode f2fs_iget(struct super_block sb, unsigned long ino)
	165	{
	166	struct f2fs_sb_info *sbi = F2FS_SB(sb);
	167	struct inode *inode;
a2a4a7e4	168	int ret = 0;
19f99cee JK	169
	170	inode = iget_locked(sb, ino);
	171	if (!inode)
	172	return ERR_PTR(-ENOMEM);
a2a4a7e4 NJ	173
	174	if (!(inode->i_state & I_NEW)) {
	175	trace_f2fs_iget(inode);
19f99cee	176	return inode;
a2a4a7e4	177	}
19f99cee JK	178	if (ino == F2FS_NODE_INO(sbi) \|\| ino == F2FS_META_INO(sbi))
	179	goto make_now;
	180
	181	ret = do_read_inode(inode);
	182	if (ret)
	183	goto bad_inode;
19f99cee JK	184	make_now:
	185	if (ino == F2FS_NODE_INO(sbi)) {
	186	inode->i_mapping->a_ops = &f2fs_node_aops;
	187	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	188	} else if (ino == F2FS_META_INO(sbi)) {
	189	inode->i_mapping->a_ops = &f2fs_meta_aops;
	190	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	191	} else if (S_ISREG(inode->i_mode)) {
	192	inode->i_op = &f2fs_file_inode_operations;
	193	inode->i_fop = &f2fs_file_operations;
	194	inode->i_mapping->a_ops = &f2fs_dblock_aops;
	195	} else if (S_ISDIR(inode->i_mode)) {
	196	inode->i_op = &f2fs_dir_inode_operations;
	197	inode->i_fop = &f2fs_dir_operations;
	198	inode->i_mapping->a_ops = &f2fs_dblock_aops;
a78186eb	199	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
19f99cee	200	} else if (S_ISLNK(inode->i_mode)) {
cbaf042a JK	201	if (f2fs_encrypted_inode(inode))
	202	inode->i_op = &f2fs_encrypted_symlink_inode_operations;
	203	else
	204	inode->i_op = &f2fs_symlink_inode_operations;
19f99cee JK	205	inode->i_mapping->a_ops = &f2fs_dblock_aops;
	206	} else if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode) \|\|
	207	S_ISFIFO(inode->i_mode) \|\| S_ISSOCK(inode->i_mode)) {
	208	inode->i_op = &f2fs_special_inode_operations;
	209	init_special_inode(inode, inode->i_mode, inode->i_rdev);
	210	} else {
	211	ret = -EIO;
	212	goto bad_inode;
	213	}
	214	unlock_new_inode(inode);
a2a4a7e4	215	trace_f2fs_iget(inode);
19f99cee JK	216	return inode;
	217
	218	bad_inode:
	219	iget_failed(inode);
a2a4a7e4	220	trace_f2fs_iget_exit(inode, ret);
19f99cee JK	221	return ERR_PTR(ret);
	222	}
	223
	224	void update_inode(struct inode inode, struct page node_page)
	225	{
19f99cee JK	226	struct f2fs_inode *ri;
19f99cee JK	227
5514f0aa	228	f2fs_wait_on_page_writeback(node_page, NODE);
19f99cee	229
58bfaf44	230	ri = F2FS_INODE(node_page);
19f99cee JK	231
	232	ri->i_mode = cpu_to_le16(inode->i_mode);
	233	ri->i_advise = F2FS_I(inode)->i_advise;
	234	ri->i_uid = cpu_to_le32(i_uid_read(inode));
	235	ri->i_gid = cpu_to_le32(i_gid_read(inode));
	236	ri->i_links = cpu_to_le32(inode->i_nlink);
	237	ri->i_size = cpu_to_le64(i_size_read(inode));
	238	ri->i_blocks = cpu_to_le64(inode->i_blocks);
0c872e2d CY	239
0c872e2d CY	240	read_lock(&F2FS_I(inode)->ext_lock);
19f99cee	241	set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
0c872e2d CY	242	read_unlock(&F2FS_I(inode)->ext_lock);
0c872e2d CY	243
444c580f	244	set_raw_inline(F2FS_I(inode), ri);
19f99cee JK	245
	246	ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
	247	ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
	248	ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
	249	ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
	250	ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
	251	ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
	252	ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
	253	ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
	254	ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
6666e6aa	255	ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
19f99cee	256	ri->i_generation = cpu_to_le32(inode->i_generation);
38431545	257	ri->i_dir_level = F2FS_I(inode)->i_dir_level;
7d79e75f	258
3d1e3807	259	__set_inode_rdev(inode, ri);
398b1ac5	260	set_cold_node(inode, node_page);
19f99cee	261	set_page_dirty(node_page);
3d1e3807	262
b3783873	263	clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
19f99cee JK	264	}
19f99cee JK	265
744602cf	266	void update_inode_page(struct inode *inode)
19f99cee	267	{
4081363f	268	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
19f99cee	269	struct page *node_page;
744602cf	270	retry:
19f99cee	271	node_page = get_node_page(sbi, inode->i_ino);
744602cf JK	272	if (IS_ERR(node_page)) {
	273	int err = PTR_ERR(node_page);
	274	if (err == -ENOMEM) {
	275	cond_resched();
	276	goto retry;
	277	} else if (err != -ENOENT) {
	278	f2fs_stop_checkpoint(sbi);
	279	}
	280	return;
	281	}
19f99cee JK	282	update_inode(inode, node_page);
19f99cee JK	283	f2fs_put_page(node_page, 1);
19f99cee JK	284	}
19f99cee JK	285
39936837 JK	286	int f2fs_write_inode(struct inode inode, struct writeback_control wbc)
39936837 JK	287	{
4081363f	288	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
39936837 JK	289
	290	if (inode->i_ino == F2FS_NODE_INO(sbi) \|\|
	291	inode->i_ino == F2FS_META_INO(sbi))
	292	return 0;
	293
b3783873 JK	294	if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
	295	return 0;
	296
39936837 JK	297	/*
	298	* We need to lock here to prevent from producing dirty node pages
	299	* during the urgent cleaning time when runing out of free sections.
	300	*/
e479556b	301	f2fs_lock_op(sbi);
744602cf	302	update_inode_page(inode);
e479556b	303	f2fs_unlock_op(sbi);
92c4342f JX	304
	305	if (wbc)
	306	f2fs_balance_fs(sbi);
	307
744602cf	308	return 0;
39936837 JK	309	}
39936837 JK	310
0a8165d7	311	/*
19f99cee JK	312	* Called at the last iput() if i_nlink is zero
	313	*/
	314	void f2fs_evict_inode(struct inode *inode)
	315	{
4081363f	316	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
002a41ca	317	nid_t xnid = F2FS_I(inode)->i_xattr_nid;
19f99cee	318
88b88a66	319	/* some remained atomic pages should discarded */
1e84371f	320	if (f2fs_is_atomic_file(inode))
88b88a66 JK	321	commit_inmem_pages(inode, true);
88b88a66 JK	322
a2a4a7e4	323	trace_f2fs_evict_inode(inode);
91b0abe3	324	truncate_inode_pages_final(&inode->i_data);
19f99cee JK	325
	326	if (inode->i_ino == F2FS_NODE_INO(sbi) \|\|
	327	inode->i_ino == F2FS_META_INO(sbi))
dbf20cb2	328	goto out_clear;
19f99cee	329
a7ffdbe2	330	f2fs_bug_on(sbi, get_dirty_pages(inode));
19f99cee JK	331	remove_dirty_dir_inode(inode);
	332
	333	if (inode->i_nlink \|\| is_bad_inode(inode))
	334	goto no_delete;
	335
d6212a5f	336	sb_start_intwrite(inode->i_sb);
19f99cee JK	337	set_inode_flag(F2FS_I(inode), FI_NO_ALLOC);
	338	i_size_write(inode, 0);
	339
	340	if (F2FS_HAS_BLOCKS(inode))
	341	f2fs_truncate(inode);
	342
e479556b	343	f2fs_lock_op(sbi);
19f99cee	344	remove_inode_page(inode);
e479556b	345	f2fs_unlock_op(sbi);
39936837	346
d6212a5f	347	sb_end_intwrite(inode->i_sb);
19f99cee	348	no_delete:
3289c061	349	stat_dec_inline_dir(inode);
e7a2bf22	350	stat_dec_inline_inode(inode);
0bdee482 CY	351
	352	/* update extent info in inode */
	353	if (inode->i_nlink)
	354	f2fs_preserve_extent_tree(inode);
1dcc336b	355	f2fs_destroy_extent_tree(inode);
0bdee482	356
8198899b	357	invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
002a41ca CY	358	if (xnid)
002a41ca CY	359	invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
fff04f90 JK	360	if (is_inode_flag_set(F2FS_I(inode), FI_APPEND_WRITE))
	361	add_dirty_inode(sbi, inode->i_ino, APPEND_INO);
	362	if (is_inode_flag_set(F2FS_I(inode), FI_UPDATE_WRITE))
	363	add_dirty_inode(sbi, inode->i_ino, UPDATE_INO);
dbf20cb2	364	out_clear:
fcc85a4d JK	365	#ifdef CONFIG_F2FS_FS_ENCRYPTION
fcc85a4d JK	366	if (F2FS_I(inode)->i_crypt_info)
26bf3dc7	367	f2fs_free_encryption_info(inode, F2FS_I(inode)->i_crypt_info);
fcc85a4d	368	#endif
dbf20cb2	369	clear_inode(inode);
19f99cee	370	}
44c16156 JK	371
	372	/* caller should call f2fs_lock_op() */
	373	void handle_failed_inode(struct inode *inode)
	374	{
	375	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	376
	377	clear_nlink(inode);
	378	make_bad_inode(inode);
	379	unlock_new_inode(inode);
	380
	381	i_size_write(inode, 0);
	382	if (F2FS_HAS_BLOCKS(inode))
	383	f2fs_truncate(inode);
	384
	385	remove_inode_page(inode);
44c16156	386
b3d208f9	387	clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
3289c061	388	clear_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY);
44c16156 JK	389	alloc_nid_failed(sbi, inode->i_ino);
	390	f2fs_unlock_op(sbi);
	391
	392	/* iput will drop the inode object */
	393	iput(inode);
	394	}