[deliverable/linux.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 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 int do_read_inode(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
	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);
		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;

	get_extent_info(&fi->ext, ri->i_ext);
	get_inline_info(fi, ri);

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

	f2fs_put_page(node_page, 1);
	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_ZERO);
	} else if (S_ISLNK(inode->i_mode)) {
		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);
	set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
	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_SB(inode->i_sb);
	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_SB(inode->i_sb);

	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_SB(inode->i_sb);

	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 no_delete;

	f2fs_bug_on(get_dirty_dents(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);
	stat_dec_inline_inode(inode);
	f2fs_unlock_op(sbi);

	sb_end_intwrite(inode->i_sb);
no_delete:
	clear_inode(inode);
	invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
}
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
	54	static void __set_inode_rdev(struct inode inode, struct f2fs_inode ri)
	55	{
	56	if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode)) {
	57	if (old_valid_dev(inode->i_rdev)) {
6c311ec6 CF	58	ri->i_addr[0] =
6c311ec6 CF	59	cpu_to_le32(old_encode_dev(inode->i_rdev));
3d1e3807 JK	60	ri->i_addr[1] = 0;
	61	} else {
	62	ri->i_addr[0] = 0;
6c311ec6 CF	63	ri->i_addr[1] =
6c311ec6 CF	64	cpu_to_le32(new_encode_dev(inode->i_rdev));
3d1e3807 JK	65	ri->i_addr[2] = 0;
	66	}
	67	}
	68	}
	69
19f99cee JK	70	static int do_read_inode(struct inode *inode)
	71	{
	72	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
	73	struct f2fs_inode_info *fi = F2FS_I(inode);
	74	struct page *node_page;
19f99cee JK	75	struct f2fs_inode *ri;
	76
	77	/* Check if ino is within scope */
064e0823 NJ	78	if (check_nid_range(sbi, inode->i_ino)) {
	79	f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
	80	(unsigned long) inode->i_ino);
	81	return -EINVAL;
	82	}
19f99cee JK	83
	84	node_page = get_node_page(sbi, inode->i_ino);
	85	if (IS_ERR(node_page))
	86	return PTR_ERR(node_page);
	87
58bfaf44	88	ri = F2FS_INODE(node_page);
19f99cee JK	89
	90	inode->i_mode = le16_to_cpu(ri->i_mode);
	91	i_uid_write(inode, le32_to_cpu(ri->i_uid));
	92	i_gid_write(inode, le32_to_cpu(ri->i_gid));
	93	set_nlink(inode, le32_to_cpu(ri->i_links));
	94	inode->i_size = le64_to_cpu(ri->i_size);
	95	inode->i_blocks = le64_to_cpu(ri->i_blocks);
	96
	97	inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
	98	inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
	99	inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
	100	inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
	101	inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
	102	inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
	103	inode->i_generation = le32_to_cpu(ri->i_generation);
	104
	105	fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
	106	fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
	107	fi->i_flags = le32_to_cpu(ri->i_flags);
	108	fi->flags = 0;
19f99cee	109	fi->i_advise = ri->i_advise;
6666e6aa	110	fi->i_pino = le32_to_cpu(ri->i_pino);
38431545	111	fi->i_dir_level = ri->i_dir_level;
3d1e3807	112
19f99cee	113	get_extent_info(&fi->ext, ri->i_ext);
444c580f	114	get_inline_info(fi, ri);
3d1e3807 JK	115
	116	/* get rdev by using inline_info */
	117	__get_inode_rdev(inode, ri);
	118
19f99cee JK	119	f2fs_put_page(node_page, 1);
	120	return 0;
	121	}
	122
	123	struct inode f2fs_iget(struct super_block sb, unsigned long ino)
	124	{
	125	struct f2fs_sb_info *sbi = F2FS_SB(sb);
	126	struct inode *inode;
a2a4a7e4	127	int ret = 0;
19f99cee JK	128
	129	inode = iget_locked(sb, ino);
	130	if (!inode)
	131	return ERR_PTR(-ENOMEM);
a2a4a7e4 NJ	132
	133	if (!(inode->i_state & I_NEW)) {
	134	trace_f2fs_iget(inode);
19f99cee	135	return inode;
a2a4a7e4	136	}
19f99cee JK	137	if (ino == F2FS_NODE_INO(sbi) \|\| ino == F2FS_META_INO(sbi))
	138	goto make_now;
	139
	140	ret = do_read_inode(inode);
	141	if (ret)
	142	goto bad_inode;
19f99cee JK	143	make_now:
	144	if (ino == F2FS_NODE_INO(sbi)) {
	145	inode->i_mapping->a_ops = &f2fs_node_aops;
	146	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	147	} else if (ino == F2FS_META_INO(sbi)) {
	148	inode->i_mapping->a_ops = &f2fs_meta_aops;
	149	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	150	} else if (S_ISREG(inode->i_mode)) {
	151	inode->i_op = &f2fs_file_inode_operations;
	152	inode->i_fop = &f2fs_file_operations;
	153	inode->i_mapping->a_ops = &f2fs_dblock_aops;
	154	} else if (S_ISDIR(inode->i_mode)) {
	155	inode->i_op = &f2fs_dir_inode_operations;
	156	inode->i_fop = &f2fs_dir_operations;
	157	inode->i_mapping->a_ops = &f2fs_dblock_aops;
6f85b352	158	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
19f99cee JK	159	} else if (S_ISLNK(inode->i_mode)) {
	160	inode->i_op = &f2fs_symlink_inode_operations;
	161	inode->i_mapping->a_ops = &f2fs_dblock_aops;
	162	} else if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode) \|\|
	163	S_ISFIFO(inode->i_mode) \|\| S_ISSOCK(inode->i_mode)) {
	164	inode->i_op = &f2fs_special_inode_operations;
	165	init_special_inode(inode, inode->i_mode, inode->i_rdev);
	166	} else {
	167	ret = -EIO;
	168	goto bad_inode;
	169	}
	170	unlock_new_inode(inode);
a2a4a7e4	171	trace_f2fs_iget(inode);
19f99cee JK	172	return inode;
	173
	174	bad_inode:
	175	iget_failed(inode);
a2a4a7e4	176	trace_f2fs_iget_exit(inode, ret);
19f99cee JK	177	return ERR_PTR(ret);
	178	}
	179
	180	void update_inode(struct inode inode, struct page node_page)
	181	{
19f99cee JK	182	struct f2fs_inode *ri;
19f99cee JK	183
5514f0aa	184	f2fs_wait_on_page_writeback(node_page, NODE);
19f99cee	185
58bfaf44	186	ri = F2FS_INODE(node_page);
19f99cee JK	187
	188	ri->i_mode = cpu_to_le16(inode->i_mode);
	189	ri->i_advise = F2FS_I(inode)->i_advise;
	190	ri->i_uid = cpu_to_le32(i_uid_read(inode));
	191	ri->i_gid = cpu_to_le32(i_gid_read(inode));
	192	ri->i_links = cpu_to_le32(inode->i_nlink);
	193	ri->i_size = cpu_to_le64(i_size_read(inode));
	194	ri->i_blocks = cpu_to_le64(inode->i_blocks);
	195	set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
444c580f	196	set_raw_inline(F2FS_I(inode), ri);
19f99cee JK	197
	198	ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
	199	ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
	200	ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
	201	ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
	202	ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
	203	ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
	204	ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
	205	ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
	206	ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
6666e6aa	207	ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
19f99cee	208	ri->i_generation = cpu_to_le32(inode->i_generation);
38431545	209	ri->i_dir_level = F2FS_I(inode)->i_dir_level;
7d79e75f	210
3d1e3807	211	__set_inode_rdev(inode, ri);
398b1ac5	212	set_cold_node(inode, node_page);
19f99cee	213	set_page_dirty(node_page);
3d1e3807	214
b3783873	215	clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
19f99cee JK	216	}
19f99cee JK	217
744602cf	218	void update_inode_page(struct inode *inode)
19f99cee JK	219	{
	220	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
	221	struct page *node_page;
744602cf	222	retry:
19f99cee	223	node_page = get_node_page(sbi, inode->i_ino);
744602cf JK	224	if (IS_ERR(node_page)) {
	225	int err = PTR_ERR(node_page);
	226	if (err == -ENOMEM) {
	227	cond_resched();
	228	goto retry;
	229	} else if (err != -ENOENT) {
	230	f2fs_stop_checkpoint(sbi);
	231	}
	232	return;
	233	}
19f99cee JK	234	update_inode(inode, node_page);
19f99cee JK	235	f2fs_put_page(node_page, 1);
19f99cee JK	236	}
19f99cee JK	237
39936837 JK	238	int f2fs_write_inode(struct inode inode, struct writeback_control wbc)
	239	{
	240	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
39936837 JK	241
	242	if (inode->i_ino == F2FS_NODE_INO(sbi) \|\|
	243	inode->i_ino == F2FS_META_INO(sbi))
	244	return 0;
	245
b3783873 JK	246	if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
	247	return 0;
	248
39936837 JK	249	/*
	250	* We need to lock here to prevent from producing dirty node pages
	251	* during the urgent cleaning time when runing out of free sections.
	252	*/
e479556b	253	f2fs_lock_op(sbi);
744602cf	254	update_inode_page(inode);
e479556b	255	f2fs_unlock_op(sbi);
92c4342f JX	256
	257	if (wbc)
	258	f2fs_balance_fs(sbi);
	259
744602cf	260	return 0;
39936837 JK	261	}
39936837 JK	262
0a8165d7	263	/*
19f99cee JK	264	* Called at the last iput() if i_nlink is zero
	265	*/
	266	void f2fs_evict_inode(struct inode *inode)
	267	{
	268	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
	269
a2a4a7e4	270	trace_f2fs_evict_inode(inode);
91b0abe3	271	truncate_inode_pages_final(&inode->i_data);
19f99cee JK	272
	273	if (inode->i_ino == F2FS_NODE_INO(sbi) \|\|
	274	inode->i_ino == F2FS_META_INO(sbi))
	275	goto no_delete;
	276
f8b2c1f9	277	f2fs_bug_on(get_dirty_dents(inode));
19f99cee JK	278	remove_dirty_dir_inode(inode);
	279
	280	if (inode->i_nlink \|\| is_bad_inode(inode))
	281	goto no_delete;
	282
d6212a5f	283	sb_start_intwrite(inode->i_sb);
19f99cee JK	284	set_inode_flag(F2FS_I(inode), FI_NO_ALLOC);
	285	i_size_write(inode, 0);
	286
	287	if (F2FS_HAS_BLOCKS(inode))
	288	f2fs_truncate(inode);
	289
e479556b	290	f2fs_lock_op(sbi);
19f99cee	291	remove_inode_page(inode);
0dbdc2ae	292	stat_dec_inline_inode(inode);
e479556b	293	f2fs_unlock_op(sbi);
39936837	294
d6212a5f	295	sb_end_intwrite(inode->i_sb);
19f99cee JK	296	no_delete:
19f99cee JK	297	clear_inode(inode);
8198899b	298	invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
19f99cee	299	}