f2fs: use kvmalloc, if kmalloc is failed

One report says memalloc failure during mount.

(unwind_backtrace) from [<c010cd4c>] (show_stack+0x10/0x14)
(show_stack) from [<c049c6b8>] (dump_stack+0x8c/0xa0)
(dump_stack) from [<c024fcf0>] (warn_alloc+0xc4/0x160)
(warn_alloc) from [<c0250218>] (__alloc_pages_nodemask+0x3f4/0x10d0)
(__alloc_pages_nodemask) from [<c0270450>] (kmalloc_order_trace+0x2c/0x120)
(kmalloc_order_trace) from [<c03fa748>] (build_node_manager+0x35c/0x688)
(build_node_manager) from [<c03de494>] (f2fs_fill_super+0xf0c/0x16cc)
(f2fs_fill_super) from [<c02a5864>] (mount_bdev+0x15c/0x188)
(mount_bdev) from [<c03da624>] (f2fs_mount+0x18/0x20)
(f2fs_mount) from [<c02a68b8>] (mount_fs+0x158/0x19c)
(mount_fs) from [<c02c3c9c>] (vfs_kern_mount+0x78/0x134)
(vfs_kern_mount) from [<c02c76ac>] (do_mount+0x474/0xca4)
(do_mount) from [<c02c8264>] (SyS_mount+0x94/0xbc)
(SyS_mount) from [<c0108180>] (ret_fast_syscall+0x0/0x48)

Reviewed-by: Chao Yu <[e-mail]>
Signed-off-by: Jaegeuk Kim <[e-mail]>

fs/f2fs/acl.c

···
 	return (void *)f2fs_acl;
 
 fail:
-	kfree(f2fs_acl);
+	kvfree(f2fs_acl);
 	return ERR_PTR(-EINVAL);
 }
 
···
 		acl = NULL;
 	else
 		acl = ERR_PTR(retval);
-	kfree(value);
+	kvfree(value);
 
 	return acl;
 }
···
 
 	error = f2fs_setxattr(inode, name_index, "", value, size, ipage, 0);
 
-	kfree(value);
+	kvfree(value);
 	if (!error)
 		set_cached_acl(inode, type, acl);
 

fs/f2fs/checkpoint.c

···
 	f2fs_put_page(cp1, 1);
 	f2fs_put_page(cp2, 1);
 fail_no_cp:
-	kfree(sbi->ckpt);
+	kvfree(sbi->ckpt);
 	return -EINVAL;
 }
 

fs/f2fs/data.c

···
 	bio->bi_private = dio->orig_private;
 	bio->bi_end_io = dio->orig_end_io;
 
-	kfree(dio);
+	kvfree(dio);
 
 	bio_endio(bio);
 }

fs/f2fs/debug.c

···
 	list_del(&si->stat_list);
 	mutex_unlock(&f2fs_stat_mutex);
 
-	kfree(si);
+	kvfree(si);
 }
 
 int __init f2fs_create_root_stats(void)

fs/f2fs/f2fs.h

···
 	if (lock)
 		spin_lock_irqsave(&sbi->cp_lock, flags);
 	__clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
-	kfree(NM_I(sbi)->nat_bits);
+	kvfree(NM_I(sbi)->nat_bits);
 	NM_I(sbi)->nat_bits = NULL;
 	if (lock)
 		spin_unlock_irqrestore(&sbi->cp_lock, flags);
···
 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
 					size_t size, gfp_t flags)
 {
+	void *ret;
+
 	if (time_to_inject(sbi, FAULT_KMALLOC)) {
 		f2fs_show_injection_info(FAULT_KMALLOC);
 		return NULL;
 	}
 
-	return kmalloc(size, flags);
+	ret = kmalloc(size, flags);
+	if (ret)
+		return ret;
+
+	return kvmalloc(size, flags);
 }
 
 static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,

fs/f2fs/gc.c

···
 			"f2fs_gc-%u:%u", MAJOR(dev), MINOR(dev));
 	if (IS_ERR(gc_th->f2fs_gc_task)) {
 		err = PTR_ERR(gc_th->f2fs_gc_task);
-		kfree(gc_th);
+		kvfree(gc_th);
 		sbi->gc_thread = NULL;
 	}
 out:
···
 	if (!gc_th)
 		return;
 	kthread_stop(gc_th->f2fs_gc_task);
-	kfree(gc_th);
+	kvfree(gc_th);
 	sbi->gc_thread = NULL;
 }
 

fs/f2fs/inline.c

···
 
 	stat_dec_inline_dir(dir);
 	clear_inode_flag(dir, FI_INLINE_DENTRY);
-	kfree(backup_dentry);
+	kvfree(backup_dentry);
 	return 0;
 recover:
 	lock_page(ipage);
···
 	set_page_dirty(ipage);
 	f2fs_put_page(ipage, 1);
 
-	kfree(backup_dentry);
+	kvfree(backup_dentry);
 	return err;
 }
 

fs/f2fs/namei.c

···
 	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;
 }
 

fs/f2fs/node.c

···
 
 		for (i = 0; i < nm_i->nat_blocks; i++)
 			kvfree(nm_i->free_nid_bitmap[i]);
-		kfree(nm_i->free_nid_bitmap);
+		kvfree(nm_i->free_nid_bitmap);
 	}
 	kvfree(nm_i->free_nid_count);
 
-	kfree(nm_i->nat_bitmap);
-	kfree(nm_i->nat_bits);
+	kvfree(nm_i->nat_bitmap);
+	kvfree(nm_i->nat_bits);
 #ifdef CONFIG_F2FS_CHECK_FS
-	kfree(nm_i->nat_bitmap_mir);
+	kvfree(nm_i->nat_bitmap_mir);
 #endif
 	sbi->nm_info = NULL;
-	kfree(nm_i);
+	kvfree(nm_i);
 }
 
 int __init f2fs_create_node_manager_caches(void)

fs/f2fs/segment.c

···
 				"f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
 	if (IS_ERR(fcc->f2fs_issue_flush)) {
 		err = PTR_ERR(fcc->f2fs_issue_flush);
-		kfree(fcc);
+		kvfree(fcc);
 		SM_I(sbi)->fcc_info = NULL;
 		return err;
 	}
···
 		kthread_stop(flush_thread);
 	}
 	if (free) {
-		kfree(fcc);
+		kvfree(fcc);
 		SM_I(sbi)->fcc_info = NULL;
 	}
 }
···
 				"f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev));
 	if (IS_ERR(dcc->f2fs_issue_discard)) {
 		err = PTR_ERR(dcc->f2fs_issue_discard);
-		kfree(dcc);
+		kvfree(dcc);
 		SM_I(sbi)->dcc_info = NULL;
 		return err;
 	}
···
 
 	f2fs_stop_discard_thread(sbi);
 
-	kfree(dcc);
+	kvfree(dcc);
 	SM_I(sbi)->dcc_info = NULL;
 }
 
···
 
 	destroy_victim_secmap(sbi);
 	SM_I(sbi)->dirty_info = NULL;
-	kfree(dirty_i);
+	kvfree(dirty_i);
 }
 
 static void destroy_curseg(struct f2fs_sb_info *sbi)
···
 		return;
 	SM_I(sbi)->curseg_array = NULL;
 	for (i = 0; i < NR_CURSEG_TYPE; i++) {
-		kfree(array[i].sum_blk);
-		kfree(array[i].journal);
+		kvfree(array[i].sum_blk);
+		kvfree(array[i].journal);
 	}
-	kfree(array);
+	kvfree(array);
 }
 
 static void destroy_free_segmap(struct f2fs_sb_info *sbi)
···
 	SM_I(sbi)->free_info = NULL;
 	kvfree(free_i->free_segmap);
 	kvfree(free_i->free_secmap);
-	kfree(free_i);
+	kvfree(free_i);
 }
 
 static void destroy_sit_info(struct f2fs_sb_info *sbi)
···
 
 	if (sit_i->sentries) {
 		for (start = 0; start < MAIN_SEGS(sbi); start++) {
-			kfree(sit_i->sentries[start].cur_valid_map);
+			kvfree(sit_i->sentries[start].cur_valid_map);
 #ifdef CONFIG_F2FS_CHECK_FS
-			kfree(sit_i->sentries[start].cur_valid_map_mir);
+			kvfree(sit_i->sentries[start].cur_valid_map_mir);
 #endif
-			kfree(sit_i->sentries[start].ckpt_valid_map);
-			kfree(sit_i->sentries[start].discard_map);
+			kvfree(sit_i->sentries[start].ckpt_valid_map);
+			kvfree(sit_i->sentries[start].discard_map);
 		}
 	}
-	kfree(sit_i->tmp_map);
+	kvfree(sit_i->tmp_map);
 
 	kvfree(sit_i->sentries);
 	kvfree(sit_i->sec_entries);
 	kvfree(sit_i->dirty_sentries_bitmap);
 
 	SM_I(sbi)->sit_info = NULL;
-	kfree(sit_i->sit_bitmap);
+	kvfree(sit_i->sit_bitmap);
 #ifdef CONFIG_F2FS_CHECK_FS
-	kfree(sit_i->sit_bitmap_mir);
+	kvfree(sit_i->sit_bitmap_mir);
 #endif
-	kfree(sit_i);
+	kvfree(sit_i);
 }
 
 void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi)
···
 	destroy_free_segmap(sbi);
 	destroy_sit_info(sbi);
 	sbi->sm_info = NULL;
-	kfree(sm_info);
+	kvfree(sm_info);
 }
 
 int __init f2fs_create_segment_manager_caches(void)

fs/f2fs/super.c

···
 	set_opt(sbi, QUOTA);
 	return 0;
 errout:
-	kfree(qname);
+	kvfree(qname);
 	return ret;
 }
 
···
 			" when quota turned on");
 		return -EINVAL;
 	}
-	kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
+	kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
 	F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
 	return 0;
 }
···
 				set_opt(sbi, BG_GC);
 				set_opt(sbi, FORCE_FG_GC);
 			} else {
-				kfree(name);
+				kvfree(name);
 				return -EINVAL;
 			}
-			kfree(name);
+			kvfree(name);
 			break;
 		case Opt_disable_roll_forward:
 			set_opt(sbi, DISABLE_ROLL_FORWARD);
···
 					f2fs_msg(sb, KERN_WARNING,
 						 "adaptive mode is not allowed with "
 						 "zoned block device feature");
-					kfree(name);
+					kvfree(name);
 					return -EINVAL;
 				}
 				set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
···
 					!strncmp(name, "lfs", 3)) {
 				set_opt_mode(sbi, F2FS_MOUNT_LFS);
 			} else {
-				kfree(name);
+				kvfree(name);
 				return -EINVAL;
 			}
-			kfree(name);
+			kvfree(name);
 			break;
 		case Opt_io_size_bits:
 			if (args->from && match_int(args, &arg))
···
 					!strncmp(name, "fs-based", 8)) {
 				F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
 			} else {
-				kfree(name);
+				kvfree(name);
 				return -EINVAL;
 			}
-			kfree(name);
+			kvfree(name);
 			break;
 		case Opt_alloc:
 			name = match_strdup(&args[0]);
···
 					!strncmp(name, "reuse", 5)) {
 				F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
 			} else {
-				kfree(name);
+				kvfree(name);
 				return -EINVAL;
 			}
-			kfree(name);
+			kvfree(name);
 			break;
 		case Opt_fsync:
 			name = match_strdup(&args[0]);
···
 				F2FS_OPTION(sbi).fsync_mode =
 							FSYNC_MODE_NOBARRIER;
 			} else {
-				kfree(name);
+				kvfree(name);
 				return -EINVAL;
 			}
-			kfree(name);
+			kvfree(name);
 			break;
 		case Opt_test_dummy_encryption:
 #ifdef CONFIG_F2FS_FS_ENCRYPTION
···
 					!strncmp(name, "disable", 7)) {
 				set_opt(sbi, DISABLE_CHECKPOINT);
 			} else {
-				kfree(name);
+				kvfree(name);
 				return -EINVAL;
 			}
-			kfree(name);
+			kvfree(name);
 			break;
 		default:
 			f2fs_msg(sb, KERN_ERR,
···
 	for (i = 0; i < sbi->s_ndevs; i++) {
 		blkdev_put(FDEV(i).bdev, FMODE_EXCL);
 #ifdef CONFIG_BLK_DEV_ZONED
-		kfree(FDEV(i).blkz_type);
+		kvfree(FDEV(i).blkz_type);
 #endif
 	}
-	kfree(sbi->devs);
+	kvfree(sbi->devs);
 }
 
 static void f2fs_put_super(struct super_block *sb)
···
 	f2fs_destroy_node_manager(sbi);
 	f2fs_destroy_segment_manager(sbi);
 
-	kfree(sbi->ckpt);
+	kvfree(sbi->ckpt);
 
 	f2fs_unregister_sysfs(sbi);
 
 	sb->s_fs_info = NULL;
 	if (sbi->s_chksum_driver)
 		crypto_free_shash(sbi->s_chksum_driver);
-	kfree(sbi->raw_super);
+	kvfree(sbi->raw_super);
 
 	destroy_device_list(sbi);
 	mempool_destroy(sbi->write_io_dummy);
 #ifdef CONFIG_QUOTA
 	for (i = 0; i < MAXQUOTAS; i++)
-		kfree(F2FS_OPTION(sbi).s_qf_names[i]);
+		kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
 #endif
 	destroy_percpu_info(sbi);
 	for (i = 0; i < NR_PAGE_TYPE; i++)
-		kfree(sbi->write_io[i]);
-	kfree(sbi);
+		kvfree(sbi->write_io[i]);
+	kvfree(sbi);
 }
 
 int f2fs_sync_fs(struct super_block *sb, int sync)
···
 				GFP_KERNEL);
 			if (!org_mount_opt.s_qf_names[i]) {
 				for (j = 0; j < i; j++)
-					kfree(org_mount_opt.s_qf_names[j]);
+					kvfree(org_mount_opt.s_qf_names[j]);
 				return -ENOMEM;
 			}
 		} else {
···
 #ifdef CONFIG_QUOTA
 	/* Release old quota file names */
 	for (i = 0; i < MAXQUOTAS; i++)
-		kfree(org_mount_opt.s_qf_names[i]);
+		kvfree(org_mount_opt.s_qf_names[i]);
 #endif
 	/* Update the POSIXACL Flag */
 	sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
···
 #ifdef CONFIG_QUOTA
 	F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
 	for (i = 0; i < MAXQUOTAS; i++) {
-		kfree(F2FS_OPTION(sbi).s_qf_names[i]);
+		kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
 		F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
 	}
 #endif
···
 		}
 	}
 
-	kfree(zones);
+	kvfree(zones);
 
 	return err;
 }
···
 
 	/* No valid superblock */
 	if (!*raw_super)
-		kfree(super);
+		kvfree(super);
 	else
 		err = 0;
 
···
 		if (err)
 			goto free_meta;
 	}
-	kfree(options);
+	kvfree(options);
 
 	/* recover broken superblock */
 	if (recovery) {
···
 	f2fs_destroy_segment_manager(sbi);
 free_devices:
 	destroy_device_list(sbi);
-	kfree(sbi->ckpt);
+	kvfree(sbi->ckpt);
 free_meta_inode:
 	make_bad_inode(sbi->meta_inode);
 	iput(sbi->meta_inode);
···
 	destroy_percpu_info(sbi);
 free_bio_info:
 	for (i = 0; i < NR_PAGE_TYPE; i++)
-		kfree(sbi->write_io[i]);
+		kvfree(sbi->write_io[i]);
 free_options:
 #ifdef CONFIG_QUOTA
 	for (i = 0; i < MAXQUOTAS; i++)
-		kfree(F2FS_OPTION(sbi).s_qf_names[i]);
+		kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
 #endif
-	kfree(options);
+	kvfree(options);
 free_sb_buf:
-	kfree(raw_super);
+	kvfree(raw_super);
 free_sbi:
 	if (sbi->s_chksum_driver)
 		crypto_free_shash(sbi->s_chksum_driver);
-	kfree(sbi);
+	kvfree(sbi);
 
 	/* give only one another chance */
 	if (retry) {