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

#include <trace/events/f2fs.h>

void f2fs_mark_inode_dirty_sync(struct inode *inode)
{
	if (f2fs_inode_dirtied(inode))
		return;
	mark_inode_dirty_sync(inode);
}

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;
	inode_set_flags(inode, new_fl,
			S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
	f2fs_mark_inode_dirty_sync(inode);
}

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, true);

			set_inode_flag(inode, FI_DATA_EXIST);
			set_raw_inline(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;

	if (f2fs_init_extent_tree(inode, &ri->i_ext))
		set_page_dirty(node_page);

	get_inline_info(inode, 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(inode, FI_FIRST_BLOCK_WRITTEN);

	if (!need_inode_block_update(sbi, inode->i_ino))
		fi->last_disk_size = inode->i_size;

	f2fs_put_page(node_page, 1);

	stat_inc_inline_xattr(inode);
	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_nohighmem(inode);
		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);
}

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

	f2fs_inode_synced(inode);

	f2fs_wait_on_page_writeback(node_page, NODE, true);

	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);

	if (F2FS_I(inode)->extent_tree)
		set_raw_extent(&F2FS_I(inode)->extent_tree->largest,
							&ri->i_ext);
	else
		memset(&ri->i_ext, 0, sizeof(ri->i_ext));
	set_raw_inline(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);

	/* deleted inode */
	if (inode->i_nlink == 0)
		clear_inline_node(node_page);

	return set_page_dirty(node_page);
}

int update_inode_page(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	struct page *node_page;
	int ret = 0;
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, false);
		}
		f2fs_inode_synced(inode);
		return 0;
	}
	ret = update_inode(inode, node_page);
	f2fs_put_page(node_page, 1);
	return ret;
}

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(inode, FI_DIRTY_INODE))
		return 0;

	/*
	 * We need to balance fs here to prevent from producing dirty node pages
	 * during the urgent cleaning time when runing out of free sections.
	 */
	if (update_inode_page(inode))
		f2fs_balance_fs(sbi, true);
	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;
	int err = 0;

	/* some remained atomic pages should discarded */
	if (f2fs_is_atomic_file(inode))
		drop_inmem_pages(inode);

	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_inode(inode);

	f2fs_destroy_extent_tree(inode);

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

#ifdef CONFIG_F2FS_FAULT_INJECTION
	if (time_to_inject(FAULT_EVICT_INODE))
		goto no_delete;
#endif

	sb_start_intwrite(inode->i_sb);
	set_inode_flag(inode, FI_NO_ALLOC);
	i_size_write(inode, 0);
retry:
	if (F2FS_HAS_BLOCKS(inode))
		err = f2fs_truncate(inode);

	if (!err) {
		f2fs_lock_op(sbi);
		err = remove_inode_page(inode);
		f2fs_unlock_op(sbi);
	}

	/* give more chances, if ENOMEM case */
	if (err == -ENOMEM) {
		err = 0;
		goto retry;
	}

	if (err)
		update_inode_page(inode);
	sb_end_intwrite(inode->i_sb);
no_delete:
	stat_dec_inline_xattr(inode);
	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(inode, FI_APPEND_WRITE))
		add_ino_entry(sbi, inode->i_ino, APPEND_INO);
	if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
		add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
	if (is_inode_flag_set(inode, FI_FREE_NID)) {
		alloc_nid_failed(sbi, inode->i_ino);
		clear_inode_flag(inode, FI_FREE_NID);
	}
	f2fs_bug_on(sbi, err &&
		!exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
out_clear:
	fscrypt_put_encryption_info(inode, NULL);
	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);
	struct node_info ni;

	/* don't make bad inode, since it becomes a regular file. */
	unlock_new_inode(inode);

	/*
	 * Note: we should add inode to orphan list before f2fs_unlock_op()
	 * so we can prevent losing this orphan when encoutering checkpoint
	 * and following suddenly power-off.
	 */
	get_node_info(sbi, inode->i_ino, &ni);

	if (ni.blk_addr != NULL_ADDR) {
		int err = acquire_orphan_inode(sbi);
		if (err) {
			set_sbi_flag(sbi, SBI_NEED_FSCK);
			f2fs_msg(sbi->sb, KERN_WARNING,
				"Too many orphan inodes, run fsck to fix.");
		} else {
			add_orphan_inode(inode);
		}
		alloc_nid_done(sbi, inode->i_ino);
	} else {
		set_inode_flag(inode, FI_FREE_NID);
	}

	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>
	15
	16	#include "f2fs.h"
	17	#include "node.h"
	18
a2a4a7e4 NJ	19	#include <trace/events/f2fs.h>
a2a4a7e4 NJ	20
b56ab837 JK	21	void f2fs_mark_inode_dirty_sync(struct inode *inode)
	22	{
	23	if (f2fs_inode_dirtied(inode))
	24	return;
	25	mark_inode_dirty_sync(inode);
	26	}
	27
19f99cee JK	28	void f2fs_set_inode_flags(struct inode *inode)
	29	{
	30	unsigned int flags = F2FS_I(inode)->i_flags;
8abfb36a	31	unsigned int new_fl = 0;
19f99cee JK	32
19f99cee JK	33	if (flags & FS_SYNC_FL)
8abfb36a	34	new_fl \|= S_SYNC;
19f99cee	35	if (flags & FS_APPEND_FL)
8abfb36a	36	new_fl \|= S_APPEND;
19f99cee	37	if (flags & FS_IMMUTABLE_FL)
8abfb36a	38	new_fl \|= S_IMMUTABLE;
19f99cee	39	if (flags & FS_NOATIME_FL)
8abfb36a	40	new_fl \|= S_NOATIME;
19f99cee	41	if (flags & FS_DIRSYNC_FL)
8abfb36a	42	new_fl \|= S_DIRSYNC;
6a678857 ZZ	43	inode_set_flags(inode, new_fl,
6a678857 ZZ	44	S_SYNC\|S_APPEND\|S_IMMUTABLE\|S_NOATIME\|S_DIRSYNC);
b56ab837	45	f2fs_mark_inode_dirty_sync(inode);
19f99cee JK	46	}
19f99cee JK	47
3d1e3807 JK	48	static void __get_inode_rdev(struct inode inode, struct f2fs_inode ri)
	49	{
	50	if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode) \|\|
	51	S_ISFIFO(inode->i_mode) \|\| S_ISSOCK(inode->i_mode)) {
	52	if (ri->i_addr[0])
6c311ec6 CF	53	inode->i_rdev =
6c311ec6 CF	54	old_decode_dev(le32_to_cpu(ri->i_addr[0]));
3d1e3807	55	else
6c311ec6 CF	56	inode->i_rdev =
6c311ec6 CF	57	new_decode_dev(le32_to_cpu(ri->i_addr[1]));
3d1e3807 JK	58	}
	59	}
	60
3c6c2beb JK	61	static bool __written_first_block(struct f2fs_inode *ri)
3c6c2beb JK	62	{
adad81ed JK	63	block_t addr = le32_to_cpu(ri->i_addr[0]);
	64
	65	if (addr != NEW_ADDR && addr != NULL_ADDR)
3c6c2beb JK	66	return true;
	67	return false;
	68	}
	69
3d1e3807 JK	70	static void __set_inode_rdev(struct inode inode, struct f2fs_inode ri)
	71	{
	72	if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode)) {
	73	if (old_valid_dev(inode->i_rdev)) {
6c311ec6 CF	74	ri->i_addr[0] =
6c311ec6 CF	75	cpu_to_le32(old_encode_dev(inode->i_rdev));
3d1e3807 JK	76	ri->i_addr[1] = 0;
	77	} else {
	78	ri->i_addr[0] = 0;
6c311ec6 CF	79	ri->i_addr[1] =
6c311ec6 CF	80	cpu_to_le32(new_encode_dev(inode->i_rdev));
3d1e3807 JK	81	ri->i_addr[2] = 0;
	82	}
	83	}
	84	}
	85
9e5ba77f	86	static void __recover_inline_status(struct inode inode, struct page ipage)
b3d208f9 JK	87	{
b3d208f9 JK	88	void *inline_data = inline_data_addr(ipage);
9e5ba77f CY	89	__le32 *start = inline_data;
9e5ba77f CY	90	__le32 *end = start + MAX_INLINE_DATA / sizeof(__le32);
b3d208f9	91
9e5ba77f CY	92	while (start < end) {
9e5ba77f CY	93	if (*start++) {
fec1d657	94	f2fs_wait_on_page_writeback(ipage, NODE, true);
b3d208f9	95
91942321 JK	96	set_inode_flag(inode, FI_DATA_EXIST);
91942321 JK	97	set_raw_inline(inode, F2FS_INODE(ipage));
9e5ba77f CY	98	set_page_dirty(ipage);
	99	return;
	100	}
b3d208f9	101	}
9e5ba77f	102	return;
b3d208f9 JK	103	}
b3d208f9 JK	104
19f99cee JK	105	static int do_read_inode(struct inode *inode)
19f99cee JK	106	{
4081363f	107	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
19f99cee JK	108	struct f2fs_inode_info *fi = F2FS_I(inode);
19f99cee JK	109	struct page *node_page;
19f99cee JK	110	struct f2fs_inode *ri;
	111
	112	/* Check if ino is within scope */
064e0823 NJ	113	if (check_nid_range(sbi, inode->i_ino)) {
	114	f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
	115	(unsigned long) inode->i_ino);
d6b7d4b3	116	WARN_ON(1);
064e0823 NJ	117	return -EINVAL;
064e0823 NJ	118	}
19f99cee JK	119
	120	node_page = get_node_page(sbi, inode->i_ino);
	121	if (IS_ERR(node_page))
	122	return PTR_ERR(node_page);
	123
58bfaf44	124	ri = F2FS_INODE(node_page);
19f99cee JK	125
	126	inode->i_mode = le16_to_cpu(ri->i_mode);
	127	i_uid_write(inode, le32_to_cpu(ri->i_uid));
	128	i_gid_write(inode, le32_to_cpu(ri->i_gid));
	129	set_nlink(inode, le32_to_cpu(ri->i_links));
	130	inode->i_size = le64_to_cpu(ri->i_size);
	131	inode->i_blocks = le64_to_cpu(ri->i_blocks);
	132
	133	inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
	134	inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
	135	inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
	136	inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
	137	inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
	138	inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
	139	inode->i_generation = le32_to_cpu(ri->i_generation);
	140
	141	fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
	142	fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
	143	fi->i_flags = le32_to_cpu(ri->i_flags);
	144	fi->flags = 0;
19f99cee	145	fi->i_advise = ri->i_advise;
6666e6aa	146	fi->i_pino = le32_to_cpu(ri->i_pino);
38431545	147	fi->i_dir_level = ri->i_dir_level;
3d1e3807	148
ed3d1256 JK	149	if (f2fs_init_extent_tree(inode, &ri->i_ext))
ed3d1256 JK	150	set_page_dirty(node_page);
0c872e2d	151
91942321	152	get_inline_info(inode, ri);
3d1e3807	153
b3d208f9 JK	154	/* check data exist */
b3d208f9 JK	155	if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
9e5ba77f	156	__recover_inline_status(inode, node_page);
b3d208f9	157
3d1e3807 JK	158	/* get rdev by using inline_info */
	159	__get_inode_rdev(inode, ri);
	160
3c6c2beb	161	if (__written_first_block(ri))
91942321	162	set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
3c6c2beb	163
26de9b11 JK	164	if (!need_inode_block_update(sbi, inode->i_ino))
	165	fi->last_disk_size = inode->i_size;
	166
19f99cee	167	f2fs_put_page(node_page, 1);
9d1015dd	168
d5e8f6c9	169	stat_inc_inline_xattr(inode);
9d1015dd JK	170	stat_inc_inline_inode(inode);
	171	stat_inc_inline_dir(inode);
	172
9e5ba77f	173	return 0;
19f99cee JK	174	}
	175
	176	struct inode f2fs_iget(struct super_block sb, unsigned long ino)
	177	{
	178	struct f2fs_sb_info *sbi = F2FS_SB(sb);
	179	struct inode *inode;
a2a4a7e4	180	int ret = 0;
19f99cee JK	181
	182	inode = iget_locked(sb, ino);
	183	if (!inode)
	184	return ERR_PTR(-ENOMEM);
a2a4a7e4 NJ	185
	186	if (!(inode->i_state & I_NEW)) {
	187	trace_f2fs_iget(inode);
19f99cee	188	return inode;
a2a4a7e4	189	}
19f99cee JK	190	if (ino == F2FS_NODE_INO(sbi) \|\| ino == F2FS_META_INO(sbi))
	191	goto make_now;
	192
	193	ret = do_read_inode(inode);
	194	if (ret)
	195	goto bad_inode;
19f99cee JK	196	make_now:
	197	if (ino == F2FS_NODE_INO(sbi)) {
	198	inode->i_mapping->a_ops = &f2fs_node_aops;
	199	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	200	} else if (ino == F2FS_META_INO(sbi)) {
	201	inode->i_mapping->a_ops = &f2fs_meta_aops;
	202	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
	203	} else if (S_ISREG(inode->i_mode)) {
	204	inode->i_op = &f2fs_file_inode_operations;
	205	inode->i_fop = &f2fs_file_operations;
	206	inode->i_mapping->a_ops = &f2fs_dblock_aops;
	207	} else if (S_ISDIR(inode->i_mode)) {
	208	inode->i_op = &f2fs_dir_inode_operations;
	209	inode->i_fop = &f2fs_dir_operations;
	210	inode->i_mapping->a_ops = &f2fs_dblock_aops;
a78186eb	211	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
19f99cee	212	} else if (S_ISLNK(inode->i_mode)) {
cbaf042a JK	213	if (f2fs_encrypted_inode(inode))
	214	inode->i_op = &f2fs_encrypted_symlink_inode_operations;
	215	else
	216	inode->i_op = &f2fs_symlink_inode_operations;
21fc61c7	217	inode_nohighmem(inode);
19f99cee JK	218	inode->i_mapping->a_ops = &f2fs_dblock_aops;
	219	} else if (S_ISCHR(inode->i_mode) \|\| S_ISBLK(inode->i_mode) \|\|
	220	S_ISFIFO(inode->i_mode) \|\| S_ISSOCK(inode->i_mode)) {
	221	inode->i_op = &f2fs_special_inode_operations;
	222	init_special_inode(inode, inode->i_mode, inode->i_rdev);
	223	} else {
	224	ret = -EIO;
	225	goto bad_inode;
	226	}
	227	unlock_new_inode(inode);
a2a4a7e4	228	trace_f2fs_iget(inode);
19f99cee JK	229	return inode;
	230
	231	bad_inode:
	232	iget_failed(inode);
a2a4a7e4	233	trace_f2fs_iget_exit(inode, ret);
19f99cee JK	234	return ERR_PTR(ret);
	235	}
	236
12719ae1	237	int update_inode(struct inode inode, struct page node_page)
19f99cee	238	{
19f99cee JK	239	struct f2fs_inode *ri;
19f99cee JK	240
1e7c48fa JK	241	f2fs_inode_synced(inode);
1e7c48fa JK	242
fec1d657	243	f2fs_wait_on_page_writeback(node_page, NODE, true);
19f99cee	244
58bfaf44	245	ri = F2FS_INODE(node_page);
19f99cee JK	246
	247	ri->i_mode = cpu_to_le16(inode->i_mode);
	248	ri->i_advise = F2FS_I(inode)->i_advise;
	249	ri->i_uid = cpu_to_le32(i_uid_read(inode));
	250	ri->i_gid = cpu_to_le32(i_gid_read(inode));
	251	ri->i_links = cpu_to_le32(inode->i_nlink);
	252	ri->i_size = cpu_to_le64(i_size_read(inode));
	253	ri->i_blocks = cpu_to_le64(inode->i_blocks);
0c872e2d	254
3e72f721 JK	255	if (F2FS_I(inode)->extent_tree)
	256	set_raw_extent(&F2FS_I(inode)->extent_tree->largest,
	257	&ri->i_ext);
	258	else
	259	memset(&ri->i_ext, 0, sizeof(ri->i_ext));
91942321	260	set_raw_inline(inode, ri);
19f99cee JK	261
	262	ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
	263	ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
	264	ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
	265	ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
	266	ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
	267	ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
	268	ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
	269	ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
	270	ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
6666e6aa	271	ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
19f99cee	272	ri->i_generation = cpu_to_le32(inode->i_generation);
38431545	273	ri->i_dir_level = F2FS_I(inode)->i_dir_level;
7d79e75f	274
3d1e3807	275	__set_inode_rdev(inode, ri);
398b1ac5	276	set_cold_node(inode, node_page);
12719ae1	277
2049d4fc JK	278	/* deleted inode */
	279	if (inode->i_nlink == 0)
	280	clear_inline_node(node_page);
	281
12719ae1	282	return set_page_dirty(node_page);
19f99cee JK	283	}
19f99cee JK	284
12719ae1	285	int update_inode_page(struct inode *inode)
19f99cee	286	{
4081363f	287	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
19f99cee	288	struct page *node_page;
12719ae1	289	int ret = 0;
744602cf	290	retry:
19f99cee	291	node_page = get_node_page(sbi, inode->i_ino);
744602cf JK	292	if (IS_ERR(node_page)) {
	293	int err = PTR_ERR(node_page);
	294	if (err == -ENOMEM) {
	295	cond_resched();
	296	goto retry;
	297	} else if (err != -ENOENT) {
38f91ca8	298	f2fs_stop_checkpoint(sbi, false);
744602cf	299	}
0f18b462	300	f2fs_inode_synced(inode);
12719ae1	301	return 0;
744602cf	302	}
12719ae1	303	ret = update_inode(inode, node_page);
19f99cee	304	f2fs_put_page(node_page, 1);
12719ae1	305	return ret;
19f99cee JK	306	}
19f99cee JK	307
39936837 JK	308	int f2fs_write_inode(struct inode inode, struct writeback_control wbc)
39936837 JK	309	{
4081363f	310	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
39936837 JK	311
	312	if (inode->i_ino == F2FS_NODE_INO(sbi) \|\|
	313	inode->i_ino == F2FS_META_INO(sbi))
	314	return 0;
	315
91942321	316	if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
b3783873 JK	317	return 0;
b3783873 JK	318
39936837	319	/*
c5cd29d2	320	* We need to balance fs here to prevent from producing dirty node pages
39936837 JK	321	* during the urgent cleaning time when runing out of free sections.
39936837 JK	322	*/
12719ae1	323	if (update_inode_page(inode))
2c4db1a6	324	f2fs_balance_fs(sbi, true);
744602cf	325	return 0;
39936837 JK	326	}
39936837 JK	327
0a8165d7	328	/*
19f99cee JK	329	* Called at the last iput() if i_nlink is zero
	330	*/
	331	void f2fs_evict_inode(struct inode *inode)
	332	{
4081363f	333	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
91942321	334	nid_t xnid = F2FS_I(inode)->i_xattr_nid;
13ec7297	335	int err = 0;
19f99cee	336
88b88a66	337	/* some remained atomic pages should discarded */
1e84371f	338	if (f2fs_is_atomic_file(inode))
29b96b54	339	drop_inmem_pages(inode);
88b88a66	340
a2a4a7e4	341	trace_f2fs_evict_inode(inode);
91b0abe3	342	truncate_inode_pages_final(&inode->i_data);
19f99cee JK	343
	344	if (inode->i_ino == F2FS_NODE_INO(sbi) \|\|
	345	inode->i_ino == F2FS_META_INO(sbi))
dbf20cb2	346	goto out_clear;
19f99cee	347
a7ffdbe2	348	f2fs_bug_on(sbi, get_dirty_pages(inode));
c227f912	349	remove_dirty_inode(inode);
19f99cee	350
3e72f721 JK	351	f2fs_destroy_extent_tree(inode);
3e72f721 JK	352
19f99cee JK	353	if (inode->i_nlink \|\| is_bad_inode(inode))
	354	goto no_delete;
	355
53aa6bbf JK	356	#ifdef CONFIG_F2FS_FAULT_INJECTION
	357	if (time_to_inject(FAULT_EVICT_INODE))
	358	goto no_delete;
	359	#endif
	360
d6212a5f	361	sb_start_intwrite(inode->i_sb);
91942321	362	set_inode_flag(inode, FI_NO_ALLOC);
19f99cee	363	i_size_write(inode, 0);
4c0c2949	364	retry:
19f99cee	365	if (F2FS_HAS_BLOCKS(inode))
9a449e9c	366	err = f2fs_truncate(inode);
19f99cee	367
13ec7297 CY	368	if (!err) {
	369	f2fs_lock_op(sbi);
	370	err = remove_inode_page(inode);
	371	f2fs_unlock_op(sbi);
	372	}
39936837	373
4c0c2949 JK	374	/* give more chances, if ENOMEM case */
	375	if (err == -ENOMEM) {
	376	err = 0;
	377	goto retry;
	378	}
	379
0f18b462 JK	380	if (err)
0f18b462 JK	381	update_inode_page(inode);
d6212a5f	382	sb_end_intwrite(inode->i_sb);
19f99cee	383	no_delete:
d5e8f6c9	384	stat_dec_inline_xattr(inode);
3289c061	385	stat_dec_inline_dir(inode);
e7a2bf22	386	stat_dec_inline_inode(inode);
0bdee482	387
8198899b	388	invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
002a41ca CY	389	if (xnid)
002a41ca CY	390	invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
91942321	391	if (is_inode_flag_set(inode, FI_APPEND_WRITE))
a49324f1	392	add_ino_entry(sbi, inode->i_ino, APPEND_INO);
91942321	393	if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
a49324f1	394	add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
91942321	395	if (is_inode_flag_set(inode, FI_FREE_NID)) {
221149c0	396	alloc_nid_failed(sbi, inode->i_ino);
91942321	397	clear_inode_flag(inode, FI_FREE_NID);
c9b63bd0	398	}
29234b1d JK	399	f2fs_bug_on(sbi, err &&
29234b1d JK	400	!exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
dbf20cb2	401	out_clear:
0b81d077	402	fscrypt_put_encryption_info(inode, NULL);
dbf20cb2	403	clear_inode(inode);
19f99cee	404	}
44c16156 JK	405
	406	/* caller should call f2fs_lock_op() */
	407	void handle_failed_inode(struct inode *inode)
	408	{
	409	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
221149c0	410	struct node_info ni;
44c16156	411
221149c0	412	/* don't make bad inode, since it becomes a regular file. */
44c16156 JK	413	unlock_new_inode(inode);
44c16156 JK	414
13ec7297	415	/*
13ec7297 CY	416	* Note: we should add inode to orphan list before f2fs_unlock_op()
	417	* so we can prevent losing this orphan when encoutering checkpoint
	418	* and following suddenly power-off.
	419	*/
221149c0 JK	420	get_node_info(sbi, inode->i_ino, &ni);
	421
	422	if (ni.blk_addr != NULL_ADDR) {
	423	int err = acquire_orphan_inode(sbi);
	424	if (err) {
	425	set_sbi_flag(sbi, SBI_NEED_FSCK);
	426	f2fs_msg(sbi->sb, KERN_WARNING,
	427	"Too many orphan inodes, run fsck to fix.");
	428	} else {
67c3758d	429	add_orphan_inode(inode);
221149c0 JK	430	}
	431	alloc_nid_done(sbi, inode->i_ino);
	432	} else {
91942321	433	set_inode_flag(inode, FI_FREE_NID);
13ec7297	434	}
44c16156	435
44c16156 JK	436	f2fs_unlock_op(sbi);
	437
	438	/* iput will drop the inode object */
	439	iput(inode);
	440	}