[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 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;

	get_extent_info(&fi->ext, 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);

	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)) {
		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_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);
	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:
	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
	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
9e5ba77f	70	static void __recover_inline_status(struct inode inode, struct page ipage)
b3d208f9 JK	71	{
b3d208f9 JK	72	void *inline_data = inline_data_addr(ipage);
9e5ba77f CY	73	__le32 *start = inline_data;
9e5ba77f CY	74	__le32 *end = start + MAX_INLINE_DATA / sizeof(__le32);
b3d208f9	75
9e5ba77f CY	76	while (start < end) {
	77	if (*start++) {
	78	f2fs_wait_on_page_writeback(ipage, NODE);
b3d208f9	79
9e5ba77f CY	80	set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
	81	set_raw_inline(F2FS_I(inode), F2FS_INODE(ipage));
	82	set_page_dirty(ipage);
	83	return;
	84	}
b3d208f9	85	}
9e5ba77f	86	return;
b3d208f9 JK	87	}
b3d208f9 JK	88
19f99cee JK	89	static int do_read_inode(struct inode *inode)
19f99cee JK	90	{
4081363f	91	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
19f99cee JK	92	struct f2fs_inode_info *fi = F2FS_I(inode);
19f99cee JK	93	struct page *node_page;
19f99cee JK	94	struct f2fs_inode *ri;
	95
	96	/* Check if ino is within scope */
064e0823 NJ	97	if (check_nid_range(sbi, inode->i_ino)) {
	98	f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
	99	(unsigned long) inode->i_ino);
d6b7d4b3	100	WARN_ON(1);
064e0823 NJ	101	return -EINVAL;
064e0823 NJ	102	}
19f99cee JK	103
	104	node_page = get_node_page(sbi, inode->i_ino);
	105	if (IS_ERR(node_page))
	106	return PTR_ERR(node_page);
	107
58bfaf44	108	ri = F2FS_INODE(node_page);
19f99cee JK	109
	110	inode->i_mode = le16_to_cpu(ri->i_mode);
	111	i_uid_write(inode, le32_to_cpu(ri->i_uid));
	112	i_gid_write(inode, le32_to_cpu(ri->i_gid));
	113	set_nlink(inode, le32_to_cpu(ri->i_links));
	114	inode->i_size = le64_to_cpu(ri->i_size);
	115	inode->i_blocks = le64_to_cpu(ri->i_blocks);
	116
	117	inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
	118	inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
	119	inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
	120	inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
	121	inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
	122	inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
	123	inode->i_generation = le32_to_cpu(ri->i_generation);
	124
	125	fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
	126	fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
	127	fi->i_flags = le32_to_cpu(ri->i_flags);
	128	fi->flags = 0;
19f99cee	129	fi->i_advise = ri->i_advise;
6666e6aa	130	fi->i_pino = le32_to_cpu(ri->i_pino);
38431545	131	fi->i_dir_level = ri->i_dir_level;
3d1e3807	132
19f99cee	133	get_extent_info(&fi->ext, ri->i_ext);
444c580f	134	get_inline_info(fi, ri);
3d1e3807	135
b3d208f9 JK	136	/* check data exist */
b3d208f9 JK	137	if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
9e5ba77f	138	__recover_inline_status(inode, node_page);
b3d208f9	139
3d1e3807 JK	140	/* get rdev by using inline_info */
	141	__get_inode_rdev(inode, ri);
	142
19f99cee	143	f2fs_put_page(node_page, 1);
9d1015dd JK	144
	145	stat_inc_inline_inode(inode);
	146	stat_inc_inline_dir(inode);
	147
9e5ba77f	148	return 0;
19f99cee JK	149	}
	150
	151	struct inode f2fs_iget(struct super_block sb, unsigned long ino)
	152	{
	153	struct f2fs_sb_info *sbi = F2FS_SB(sb);
	154	struct inode *inode;
a2a4a7e4	155	int ret = 0;
19f99cee JK	156
	157	inode = iget_locked(sb, ino);
	158	if (!inode)
	159	return ERR_PTR(-ENOMEM);
a2a4a7e4 NJ	160
	161	if (!(inode->i_state & I_NEW)) {
	162	trace_f2fs_iget(inode);
19f99cee	163	return inode;
a2a4a7e4	164	}
19f99cee JK	165	if (ino == F2FS_NODE_INO(sbi) \|\| ino == F2FS_META_INO(sbi))
	166	goto make_now;
	167
	168	ret = do_read_inode(inode);
	169	if (ret)
	170	goto bad_inode;
19f99cee JK	171	make_now:
	172	if (ino == F2FS_NODE_INO(sbi)) {
	173	inode->i_mapping->a_ops = &f2fs_node_aops;
	174	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	175	} else if (ino == F2FS_META_INO(sbi)) {
	176	inode->i_mapping->a_ops = &f2fs_meta_aops;
	177	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	178	} else if (S_ISREG(inode->i_mode)) {
	179	inode->i_op = &f2fs_file_inode_operations;
	180	inode->i_fop = &f2fs_file_operations;
	181	inode->i_mapping->a_ops = &f2fs_dblock_aops;
	182	} else if (S_ISDIR(inode->i_mode)) {
	183	inode->i_op = &f2fs_dir_inode_operations;
	184	inode->i_fop = &f2fs_dir_operations;
	185	inode->i_mapping->a_ops = &f2fs_dblock_aops;
a78186eb	186	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
19f99cee JK	187	} else if (S_ISLNK(inode->i_mode)) {
	188	inode->i_op = &f2fs_symlink_inode_operations;
	189	inode->i_mapping->a_ops = &f2fs_dblock_aops;
	190	} else if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode) \|\|
	191	S_ISFIFO(inode->i_mode) \|\| S_ISSOCK(inode->i_mode)) {
	192	inode->i_op = &f2fs_special_inode_operations;
	193	init_special_inode(inode, inode->i_mode, inode->i_rdev);
	194	} else {
	195	ret = -EIO;
	196	goto bad_inode;
	197	}
	198	unlock_new_inode(inode);
a2a4a7e4	199	trace_f2fs_iget(inode);
19f99cee JK	200	return inode;
	201
	202	bad_inode:
	203	iget_failed(inode);
a2a4a7e4	204	trace_f2fs_iget_exit(inode, ret);
19f99cee JK	205	return ERR_PTR(ret);
	206	}
	207
	208	void update_inode(struct inode inode, struct page node_page)
	209	{
19f99cee JK	210	struct f2fs_inode *ri;
19f99cee JK	211
5514f0aa	212	f2fs_wait_on_page_writeback(node_page, NODE);
19f99cee	213
58bfaf44	214	ri = F2FS_INODE(node_page);
19f99cee JK	215
	216	ri->i_mode = cpu_to_le16(inode->i_mode);
	217	ri->i_advise = F2FS_I(inode)->i_advise;
	218	ri->i_uid = cpu_to_le32(i_uid_read(inode));
	219	ri->i_gid = cpu_to_le32(i_gid_read(inode));
	220	ri->i_links = cpu_to_le32(inode->i_nlink);
	221	ri->i_size = cpu_to_le64(i_size_read(inode));
	222	ri->i_blocks = cpu_to_le64(inode->i_blocks);
	223	set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
444c580f	224	set_raw_inline(F2FS_I(inode), ri);
19f99cee JK	225
	226	ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
	227	ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
	228	ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
	229	ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
	230	ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
	231	ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
	232	ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
	233	ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
	234	ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
6666e6aa	235	ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
19f99cee	236	ri->i_generation = cpu_to_le32(inode->i_generation);
38431545	237	ri->i_dir_level = F2FS_I(inode)->i_dir_level;
7d79e75f	238
3d1e3807	239	__set_inode_rdev(inode, ri);
398b1ac5	240	set_cold_node(inode, node_page);
19f99cee	241	set_page_dirty(node_page);
3d1e3807	242
b3783873	243	clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
19f99cee JK	244	}
19f99cee JK	245
744602cf	246	void update_inode_page(struct inode *inode)
19f99cee	247	{
4081363f	248	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
19f99cee	249	struct page *node_page;
744602cf	250	retry:
19f99cee	251	node_page = get_node_page(sbi, inode->i_ino);
744602cf JK	252	if (IS_ERR(node_page)) {
	253	int err = PTR_ERR(node_page);
	254	if (err == -ENOMEM) {
	255	cond_resched();
	256	goto retry;
	257	} else if (err != -ENOENT) {
	258	f2fs_stop_checkpoint(sbi);
	259	}
	260	return;
	261	}
19f99cee JK	262	update_inode(inode, node_page);
19f99cee JK	263	f2fs_put_page(node_page, 1);
19f99cee JK	264	}
19f99cee JK	265
39936837 JK	266	int f2fs_write_inode(struct inode inode, struct writeback_control wbc)
39936837 JK	267	{
4081363f	268	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
39936837 JK	269
	270	if (inode->i_ino == F2FS_NODE_INO(sbi) \|\|
	271	inode->i_ino == F2FS_META_INO(sbi))
	272	return 0;
	273
b3783873 JK	274	if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
	275	return 0;
	276
39936837 JK	277	/*
	278	* We need to lock here to prevent from producing dirty node pages
	279	* during the urgent cleaning time when runing out of free sections.
	280	*/
e479556b	281	f2fs_lock_op(sbi);
744602cf	282	update_inode_page(inode);
e479556b	283	f2fs_unlock_op(sbi);
92c4342f JX	284
	285	if (wbc)
	286	f2fs_balance_fs(sbi);
	287
744602cf	288	return 0;
39936837 JK	289	}
39936837 JK	290
0a8165d7	291	/*
19f99cee JK	292	* Called at the last iput() if i_nlink is zero
	293	*/
	294	void f2fs_evict_inode(struct inode *inode)
	295	{
4081363f	296	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
002a41ca	297	nid_t xnid = F2FS_I(inode)->i_xattr_nid;
19f99cee	298
88b88a66	299	/* some remained atomic pages should discarded */
1e84371f	300	if (f2fs_is_atomic_file(inode))
88b88a66 JK	301	commit_inmem_pages(inode, true);
88b88a66 JK	302
a2a4a7e4	303	trace_f2fs_evict_inode(inode);
91b0abe3	304	truncate_inode_pages_final(&inode->i_data);
19f99cee JK	305
	306	if (inode->i_ino == F2FS_NODE_INO(sbi) \|\|
	307	inode->i_ino == F2FS_META_INO(sbi))
dbf20cb2	308	goto out_clear;
19f99cee	309
a7ffdbe2	310	f2fs_bug_on(sbi, get_dirty_pages(inode));
19f99cee JK	311	remove_dirty_dir_inode(inode);
	312
	313	if (inode->i_nlink \|\| is_bad_inode(inode))
	314	goto no_delete;
	315
d6212a5f	316	sb_start_intwrite(inode->i_sb);
19f99cee JK	317	set_inode_flag(F2FS_I(inode), FI_NO_ALLOC);
	318	i_size_write(inode, 0);
	319
	320	if (F2FS_HAS_BLOCKS(inode))
	321	f2fs_truncate(inode);
	322
e479556b	323	f2fs_lock_op(sbi);
19f99cee	324	remove_inode_page(inode);
e479556b	325	f2fs_unlock_op(sbi);
39936837	326
d6212a5f	327	sb_end_intwrite(inode->i_sb);
19f99cee	328	no_delete:
3289c061	329	stat_dec_inline_dir(inode);
e7a2bf22	330	stat_dec_inline_inode(inode);
8198899b	331	invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
002a41ca CY	332	if (xnid)
002a41ca CY	333	invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
fff04f90 JK	334	if (is_inode_flag_set(F2FS_I(inode), FI_APPEND_WRITE))
	335	add_dirty_inode(sbi, inode->i_ino, APPEND_INO);
	336	if (is_inode_flag_set(F2FS_I(inode), FI_UPDATE_WRITE))
	337	add_dirty_inode(sbi, inode->i_ino, UPDATE_INO);
dbf20cb2 CY	338	out_clear:
dbf20cb2 CY	339	clear_inode(inode);
19f99cee	340	}
44c16156 JK	341
	342	/* caller should call f2fs_lock_op() */
	343	void handle_failed_inode(struct inode *inode)
	344	{
	345	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	346
	347	clear_nlink(inode);
	348	make_bad_inode(inode);
	349	unlock_new_inode(inode);
	350
	351	i_size_write(inode, 0);
	352	if (F2FS_HAS_BLOCKS(inode))
	353	f2fs_truncate(inode);
	354
	355	remove_inode_page(inode);
44c16156	356
b3d208f9	357	clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
3289c061	358	clear_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY);
44c16156 JK	359	alloc_nid_failed(sbi, inode->i_ino);
	360	f2fs_unlock_op(sbi);
	361
	362	/* iput will drop the inode object */
	363	iput(inode);
	364	}