1 files changed, 98 insertions, 65 deletions

diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 0355891dbbf8..94902b82d4ec 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -1,24 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * fs/f2fs/namei.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/pagemap.h>
 #include <linux/sched.h>
 #include <linux/ctype.h>
+#include <linux/random.h>
 #include <linux/dcache.h>
 #include <linux/namei.h>
 #include <linux/quotaops.h>
 
 #include "f2fs.h"
 #include "node.h"
+#include "segment.h"
 #include "xattr.h"
 #include "acl.h"
 #include <trace/events/f2fs.h>
@@ -37,7 +36,7 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
 		return ERR_PTR(-ENOMEM);
 
 	f2fs_lock_op(sbi);
-	if (!alloc_nid(sbi, &ino)) {
+	if (!f2fs_alloc_nid(sbi, &ino)) {
 		f2fs_unlock_op(sbi);
 		err = -ENOSPC;
 		goto fail;
@@ -52,7 +51,10 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
 	inode->i_blocks = 0;
 	inode->i_mtime = inode->i_atime = inode->i_ctime =
 			F2FS_I(inode)->i_crtime = current_time(inode);
-	inode->i_generation = sbi->s_next_generation++;
+	inode->i_generation = prandom_u32();
+
+	if (S_ISDIR(inode->i_mode))
+		F2FS_I(inode)->i_current_depth = 1;
 
 	err = insert_inode_locked(inode);
 	if (err) {
@@ -60,8 +62,8 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
 		goto fail;
 	}
 
-	if (f2fs_sb_has_project_quota(sbi->sb) &&
-		(F2FS_I(dir)->i_flags & FS_PROJINHERIT_FL))
+	if (f2fs_sb_has_project_quota(sbi) &&
+		(F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
 		F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
 	else
 		F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns,
@@ -71,10 +73,6 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
 	if (err)
 		goto fail_drop;
 
-	err = dquot_alloc_inode(inode);
-	if (err)
-		goto fail_drop;
-
 	set_inode_flag(inode, FI_NEW_INODE);
 
 	/* If the directory encrypted, then we should encrypt the inode. */
@@ -82,7 +80,7 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
 				f2fs_may_encrypt(inode))
 		f2fs_set_encrypted_inode(inode);
 
-	if (f2fs_sb_has_extra_attr(sbi->sb)) {
+	if (f2fs_sb_has_extra_attr(sbi)) {
 		set_inode_flag(inode, FI_EXTRA_ATTR);
 		F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
 	}
@@ -95,7 +93,7 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
 	if (f2fs_may_inline_dentry(inode))
 		set_inode_flag(inode, FI_INLINE_DENTRY);
 
-	if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) {
+	if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 		f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
 		if (f2fs_has_inline_xattr(inode))
 			xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
@@ -116,11 +114,13 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
 		f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
 
 	if (S_ISDIR(inode->i_mode))
-		F2FS_I(inode)->i_flags |= FS_INDEX_FL;
+		F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
 
-	if (F2FS_I(inode)->i_flags & FS_PROJINHERIT_FL)
+	if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
 		set_inode_flag(inode, FI_PROJ_INHERIT);
 
+	f2fs_set_inode_flags(inode);
+
 	trace_f2fs_new_inode(inode, 0);
 	return inode;
 
@@ -143,7 +143,7 @@ fail_drop:
 	return ERR_PTR(err);
 }
 
-static int is_extension_exist(const unsigned char *s, const char *sub)
+static inline int is_extension_exist(const unsigned char *s, const char *sub)
 {
 	size_t slen = strlen(s);
 	size_t sublen = strlen(sub);
@@ -181,19 +181,22 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
 	hot_count = sbi->raw_super->hot_ext_count;
 
 	for (i = 0; i < cold_count + hot_count; i++) {
-		if (!is_extension_exist(name, extlist[i]))
-			continue;
-		if (i < cold_count)
-			file_set_cold(inode);
-		else
-			file_set_hot(inode);
-		break;
+		if (is_extension_exist(name, extlist[i]))
+			break;
 	}
 
 	up_read(&sbi->sb_lock);
+
+	if (i == cold_count + hot_count)
+		return;
+
+	if (i < cold_count)
+		file_set_cold(inode);
+	else
+		file_set_hot(inode);
 }
 
-int update_extension_list(struct f2fs_sb_info *sbi, const char *name,
+int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
 							bool hot, bool set)
 {
 	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
@@ -243,7 +246,7 @@ int update_extension_list(struct f2fs_sb_info *sbi, const char *name,
 		return -EINVAL;
 
 	if (hot) {
-		strncpy(extlist[count], name, strlen(name));
+		memcpy(extlist[count], name, strlen(name));
 		sbi->raw_super->hot_ext_count = hot_count + 1;
 	} else {
 		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
@@ -251,7 +254,7 @@ int update_extension_list(struct f2fs_sb_info *sbi, const char *name,
 		memcpy(buf, &extlist[cold_count],
 				F2FS_EXTENSION_LEN * hot_count);
 		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
-		strncpy(extlist[cold_count], name, strlen(name));
+		memcpy(extlist[cold_count], name, strlen(name));
 		memcpy(&extlist[cold_count + 1], buf,
 				F2FS_EXTENSION_LEN * hot_count);
 		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
@@ -269,6 +272,9 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 
 	if (unlikely(f2fs_cp_error(sbi)))
 		return -EIO;
+	err = f2fs_is_checkpoint_ready(sbi);
+	if (err)
+		return err;
 
 	err = dquot_initialize(dir);
 	if (err)
@@ -292,9 +298,10 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 		goto out;
 	f2fs_unlock_op(sbi);
 
-	alloc_nid_done(sbi, ino);
+	f2fs_alloc_nid_done(sbi, ino);
 
-	d_instantiate_new(dentry, inode);
+	d_instantiate(dentry, inode);
+	unlock_new_inode(inode);
 
 	if (IS_DIRSYNC(dir))
 		f2fs_sync_fs(sbi->sb, 1);
@@ -302,7 +309,7 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 	f2fs_balance_fs(sbi, true);
 	return 0;
 out:
-	handle_failed_inode(inode);
+	f2fs_handle_failed_inode(inode);
 	return err;
 }
 
@@ -315,6 +322,9 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
 
 	if (unlikely(f2fs_cp_error(sbi)))
 		return -EIO;
+	err = f2fs_is_checkpoint_ready(sbi);
+	if (err)
+		return err;
 
 	err = fscrypt_prepare_link(old_dentry, dir, dentry);
 	if (err)
@@ -376,9 +386,8 @@ static int __recover_dot_dentries(struct inode *dir, nid_t pino)
 	int err = 0;
 
 	if (f2fs_readonly(sbi->sb)) {
-		f2fs_msg(sbi->sb, KERN_INFO,
-			"skip recovering inline_dots inode (ino:%lu, pino:%u) "
-			"in readonly mountpoint", dir->i_ino, pino);
+		f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
+			  dir->i_ino, pino);
 		return 0;
 	}
 
@@ -397,7 +406,7 @@ static int __recover_dot_dentries(struct inode *dir, nid_t pino)
 		err = PTR_ERR(page);
 		goto out;
 	} else {
-		err = __f2fs_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
+		err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
 		if (err)
 			goto out;
 	}
@@ -408,7 +417,7 @@ static int __recover_dot_dentries(struct inode *dir, nid_t pino)
 	else if (IS_ERR(page))
 		err = PTR_ERR(page);
 	else
-		err = __f2fs_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
+		err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
 out:
 	if (!err)
 		clear_inode_flag(dir, FI_INLINE_DOTS);
@@ -471,9 +480,8 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
 	if (f2fs_encrypted_inode(dir) &&
 	    (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
 	    !fscrypt_has_permitted_context(dir, inode)) {
-		f2fs_msg(inode->i_sb, KERN_WARNING,
-			 "Inconsistent encryption contexts: %lu/%lu",
-			 dir->i_ino, inode->i_ino);
+		f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
+			  dir->i_ino, inode->i_ino);
 		err = -EPERM;
 		goto out_iput;
 	}
@@ -520,7 +528,7 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
 	f2fs_balance_fs(sbi, true);
 
 	f2fs_lock_op(sbi);
-	err = acquire_orphan_inode(sbi);
+	err = f2fs_acquire_orphan_inode(sbi);
 	if (err) {
 		f2fs_unlock_op(sbi);
 		f2fs_put_page(page, 0);
@@ -558,6 +566,9 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
 
 	if (unlikely(f2fs_cp_error(sbi)))
 		return -EIO;
+	err = f2fs_is_checkpoint_ready(sbi);
+	if (err)
+		return err;
 
 	err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
 				      &disk_link);
@@ -582,9 +593,9 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
 	f2fs_lock_op(sbi);
 	err = f2fs_add_link(dentry, inode);
 	if (err)
-		goto out_handle_failed_inode;
+		goto out_f2fs_handle_failed_inode;
 	f2fs_unlock_op(sbi);
-	alloc_nid_done(sbi, inode->i_ino);
+	f2fs_alloc_nid_done(sbi, inode->i_ino);
 
 	err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
 	if (err)
@@ -593,7 +604,8 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
 	err = page_symlink(inode, disk_link.name, disk_link.len);
 
 err_out:
-	d_instantiate_new(dentry, inode);
+	d_instantiate(dentry, inode);
+	unlock_new_inode(inode);
 
 	/*
 	 * Let's flush symlink data in order to avoid broken symlink as much as
@@ -617,11 +629,11 @@ err_out:
 	f2fs_balance_fs(sbi, true);
 	goto out_free_encrypted_link;
 
-out_handle_failed_inode:
-	handle_failed_inode(inode);
+out_f2fs_handle_failed_inode:
+	f2fs_handle_failed_inode(inode);
 out_free_encrypted_link:
 	if (disk_link.name != (unsigned char *)symname)
-		kfree(disk_link.name);
+		kvfree(disk_link.name);
 	return err;
 }
 
@@ -654,9 +666,10 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 		goto out_fail;
 	f2fs_unlock_op(sbi);
 
-	alloc_nid_done(sbi, inode->i_ino);
+	f2fs_alloc_nid_done(sbi, inode->i_ino);
 
-	d_instantiate_new(dentry, inode);
+	d_instantiate(dentry, inode);
+	unlock_new_inode(inode);
 
 	if (IS_DIRSYNC(dir))
 		f2fs_sync_fs(sbi->sb, 1);
@@ -666,7 +679,7 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 
 out_fail:
 	clear_inode_flag(inode, FI_INC_LINK);
-	handle_failed_inode(inode);
+	f2fs_handle_failed_inode(inode);
 	return err;
 }
 
@@ -687,6 +700,9 @@ static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
 
 	if (unlikely(f2fs_cp_error(sbi)))
 		return -EIO;
+	err = f2fs_is_checkpoint_ready(sbi);
+	if (err)
+		return err;
 
 	err = dquot_initialize(dir);
 	if (err)
@@ -705,9 +721,10 @@ static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
 		goto out;
 	f2fs_unlock_op(sbi);
 
-	alloc_nid_done(sbi, inode->i_ino);
+	f2fs_alloc_nid_done(sbi, inode->i_ino);
 
-	d_instantiate_new(dentry, inode);
+	d_instantiate(dentry, inode);
+	unlock_new_inode(inode);
 
 	if (IS_DIRSYNC(dir))
 		f2fs_sync_fs(sbi->sb, 1);
@@ -715,7 +732,7 @@ static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
 	f2fs_balance_fs(sbi, true);
 	return 0;
 out:
-	handle_failed_inode(inode);
+	f2fs_handle_failed_inode(inode);
 	return err;
 }
 
@@ -744,7 +761,7 @@ static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
 	}
 
 	f2fs_lock_op(sbi);
-	err = acquire_orphan_inode(sbi);
+	err = f2fs_acquire_orphan_inode(sbi);
 	if (err)
 		goto out;
 
@@ -756,8 +773,8 @@ static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
 	 * add this non-linked tmpfile to orphan list, in this way we could
 	 * remove all unused data of tmpfile after abnormal power-off.
 	 */
-	add_orphan_inode(inode);
-	alloc_nid_done(sbi, inode->i_ino);
+	f2fs_add_orphan_inode(inode);
+	f2fs_alloc_nid_done(sbi, inode->i_ino);
 
 	if (whiteout) {
 		f2fs_i_links_write(inode, false);
@@ -773,9 +790,9 @@ static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
 	return 0;
 
 release_out:
-	release_orphan_inode(sbi);
+	f2fs_release_orphan_inode(sbi);
 out:
-	handle_failed_inode(inode);
+	f2fs_handle_failed_inode(inode);
 	return err;
 }
 
@@ -817,10 +834,13 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 	struct f2fs_dir_entry *old_entry;
 	struct f2fs_dir_entry *new_entry;
 	bool is_old_inline = f2fs_has_inline_dentry(old_dir);
-	int err = -ENOENT;
+	int err;
 
 	if (unlikely(f2fs_cp_error(sbi)))
 		return -EIO;
+	err = f2fs_is_checkpoint_ready(sbi);
+	if (err)
+		return err;
 
 	if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
 			(!projid_eq(F2FS_I(new_dir)->i_projid,
@@ -841,6 +861,7 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 			goto out;
 	}
 
+	err = -ENOENT;
 	old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
 	if (!old_entry) {
 		if (IS_ERR(old_page))
@@ -882,7 +903,7 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 
 		f2fs_lock_op(sbi);
 
-		err = acquire_orphan_inode(sbi);
+		err = f2fs_acquire_orphan_inode(sbi);
 		if (err)
 			goto put_out_dir;
 
@@ -896,9 +917,9 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		up_write(&F2FS_I(new_inode)->i_sem);
 
 		if (!new_inode->i_nlink)
-			add_orphan_inode(new_inode);
+			f2fs_add_orphan_inode(new_inode);
 		else
-			release_orphan_inode(sbi);
+			f2fs_release_orphan_inode(sbi);
 	} else {
 		f2fs_balance_fs(sbi, true);
 
@@ -966,13 +987,19 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 			f2fs_put_page(old_dir_page, 0);
 		f2fs_i_links_write(old_dir, false);
 	}
-	if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
-		add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
+	if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
+		f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
+		if (S_ISDIR(old_inode->i_mode))
+			f2fs_add_ino_entry(sbi, old_inode->i_ino,
+							TRANS_DIR_INO);
+	}
 
 	f2fs_unlock_op(sbi);
 
 	if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
 		f2fs_sync_fs(sbi->sb, 1);
+
+	f2fs_update_time(sbi, REQ_TIME);
 	return 0;
 
 put_out_dir:
@@ -1002,10 +1029,13 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 	struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
 	struct f2fs_dir_entry *old_entry, *new_entry;
 	int old_nlink = 0, new_nlink = 0;
-	int err = -ENOENT;
+	int err;
 
 	if (unlikely(f2fs_cp_error(sbi)))
 		return -EIO;
+	err = f2fs_is_checkpoint_ready(sbi);
+	if (err)
+		return err;
 
 	if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
 			!projid_eq(F2FS_I(new_dir)->i_projid,
@@ -1023,6 +1053,7 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 	if (err)
 		goto out;
 
+	err = -ENOENT;
 	old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
 	if (!old_entry) {
 		if (IS_ERR(old_page))
@@ -1118,14 +1149,16 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 	f2fs_mark_inode_dirty_sync(new_dir, false);
 
 	if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
-		add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
-		add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
+		f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
+		f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
 	}
 
 	f2fs_unlock_op(sbi);
 
 	if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
 		f2fs_sync_fs(sbi->sb, 1);
+
+	f2fs_update_time(sbi, REQ_TIME);
 	return 0;
 out_new_dir:
 	if (new_dir_entry) {