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f2fs-for-4.20-rc1

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In this round, we've added 1) superblock checksum feature, 2) implemented new
 mount option which we can disable/enable checkpoint to provide atomic updates of
 entire filesystem, 3) refactored quota operations to enhance its consistency
 along with checkpoint, 4) fixed subtle IO hang conditions and roll-forward
 recovery flow to resurrect any fsync'ed inode metadata.
 
 Enhancement:
  - add checksum to keep superblock contents more safe
  - add checkpoint=disable/enable to support A/B update of entire filesystem
  - use plug for readahead IO in readdir
  - add more IO counts to avoid block layer hacks
 
 Bug fix:
  - prevent data corruption issue for hardware encryption
  - fix IO hang issues when GC is heavily triggered
  - add missing up_read in __write_node_page
  - recover inode metadata during roll-forward recovery flow
  - fix null pointer dereference issue in wrongly configured discard map
 
 There are some more sanity checks and minor bug fixes as well.
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Merge tag 'f2fs-for-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've added 1) superblock checksum feature, 2)
  implemented new mount option which we can disable/enable checkpoint to
  provide atomic updates of entire filesystem, 3) refactored quota
  operations to enhance its consistency along with checkpoint, 4) fixed
  subtle IO hang conditions and roll-forward recovery flow to resurrect
  any fsync'ed inode metadata.

  Enhancements:
   - add checksum to keep superblock contents more safe
   - add checkpoint=disable/enable to support A/B update of entire filesystem
   - use plug for readahead IO in readdir
   - add more IO counts to avoid block layer hacks

  Bug fixes:
   - prevent data corruption issue for hardware encryption
   - fix IO hang issues when GC is heavily triggered
   - add missing up_read in __write_node_page
   - recover inode metadata during roll-forward recovery flow
   - fix null pointer dereference issue in wrongly configured discard map

  There are some more sanity checks and minor bug fixes as well"

* tag 'f2fs-for-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (62 commits)
  f2fs: fix to keep project quota consistent
  f2fs: guarantee journalled quota data by checkpoint
  f2fs: cleanup dirty pages if recover failed
  f2fs: fix data corruption issue with hardware encryption
  f2fs: fix to recover inode->i_flags of inode block during POR
  f2fs: spread f2fs_set_inode_flags()
  f2fs: fix to spread clear_cold_data()
  Revert "f2fs: fix to clear PG_checked flag in set_page_dirty()"
  f2fs: account read IOs and use IO counts for is_idle
  f2fs: fix to account IO correctly for cgroup writeback
  f2fs: fix to account IO correctly
  f2fs: remove request_list check in is_idle()
  f2fs: allow to mount, if quota is failed
  f2fs: update REQ_TIME in f2fs_cross_rename()
  f2fs: do not update REQ_TIME in case of error conditions
  f2fs: remove unneeded disable_nat_bits()
  f2fs: remove unused sbi->trigger_ssr_threshold
  f2fs: shrink sbi->sb_lock coverage in set_file_temperature()
  f2fs: use rb_*_cached friends
  f2fs: fix to recover cold bit of inode block during POR
  ...
This commit is contained in:
Linus Torvalds 2018-10-24 17:39:36 +01:00
commit d6edff78fe
30 changed files with 1596 additions and 570 deletions
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10
include/linux/f2fs_fs.h
View file

@ -1,12 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
/**
* include/linux/f2fs_fs.h
*
* 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.
*/
#ifndef _LINUX_F2FS_FS_H
#define _LINUX_F2FS_FS_H
@ -112,12 +109,15 @@ struct f2fs_super_block {
struct f2fs_device devs[MAX_DEVICES]; /* device list */
__le32 qf_ino[F2FS_MAX_QUOTAS]; /* quota inode numbers */
__u8 hot_ext_count; /* # of hot file extension */
__u8 reserved[314]; /* valid reserved region */
__u8 reserved[310]; /* valid reserved region */
__le32 crc; /* checksum of superblock */
} __packed;
/*
* For checkpoint
*/
#define CP_DISABLED_FLAG 0x00001000
#define CP_QUOTA_NEED_FSCK_FLAG 0x00000800
#define CP_LARGE_NAT_BITMAP_FLAG 0x00000400
#define CP_NOCRC_RECOVERY_FLAG 0x00000200
#define CP_TRIMMED_FLAG 0x00000100