From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Tue, 28 Feb 2023 00:18:51 +0000 (-0800)
Subject: Merge tag 'f2fs-for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk... 
X-Git-Tag: v6.3-rc1~56
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=103830683cfc8f43b15158b0a48014b6d6e83633;p=linux-block.git

Merge tag 'f2fs-for-6.3-rc1' of git://git./linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've got a huge number of patches that improve code
  readability along with minor bug fixes, while we've mainly fixed some
  critical issues in recently-added per-block age-based extent_cache,
  atomic write support, and some folio cases.

  Enhancements:

   - add sysfs nodes to set last_age_weight and manage
     discard_io_aware_gran

   - show ipu policy in debugfs

   - reduce stack memory cost by using bitfield in struct f2fs_io_info

   - introduce trace_f2fs_replace_atomic_write_block

   - enhance iostat support and adds flush commands

  Bug fixes:

   - revert "f2fs: truncate blocks in batch in __complete_revoke_list()"

   - fix kernel crash on the atomic write abort flow

   - call clear_page_private_reference in .{release,invalid}_folio

   - support .migrate_folio for compressed inode

   - fix cgroup writeback accounting with fs-layer encryption

   - retry to update the inode page given data corruption

   - fix kernel crash due to NULL io->bio

   - fix some bugs in per-block age-based extent_cache:
       - wrong calculation of block age
       - update age extent in f2fs_do_zero_range()
       - update age extent correctly during truncation"

* tag 'f2fs-for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (81 commits)
  f2fs: drop unnecessary arg for f2fs_ioc_*()
  f2fs: Revert "f2fs: truncate blocks in batch in __complete_revoke_list()"
  f2fs: synchronize atomic write aborts
  f2fs: fix wrong segment count
  f2fs: replace si->sbi w/ sbi in stat_show()
  f2fs: export ipu policy in debugfs
  f2fs: make kobj_type structures constant
  f2fs: fix to do sanity check on extent cache correctly
  f2fs: add missing description for ipu_policy node
  f2fs: fix to set ipu policy
  f2fs: fix typos in comments
  f2fs: fix kernel crash due to null io->bio
  f2fs: use iostat_lat_type directly as a parameter in the iostat_update_and_unbind_ctx()
  f2fs: add sysfs nodes to set last_age_weight
  f2fs: fix f2fs_show_options to show nogc_merge mount option
  f2fs: fix cgroup writeback accounting with fs-layer encryption
  f2fs: fix wrong calculation of block age
  f2fs: fix to update age extent in f2fs_do_zero_range()
  f2fs: fix to update age extent correctly during truncation
  f2fs: fix to avoid potential memory corruption in __update_iostat_latency()
  ...
---

103830683cfc8f43b15158b0a48014b6d6e83633
diff --cc fs/f2fs/file.c
index b90617639743,ca1720fc1187..15dabeac4690
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@@ -2087,19 -2092,28 +2092,28 @@@ static int f2fs_ioc_start_atomic_write(
  		goto out;
  	}
  
- 	/* Create a COW inode for atomic write */
- 	pinode = f2fs_iget(inode->i_sb, fi->i_pino);
- 	if (IS_ERR(pinode)) {
- 		f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
- 		ret = PTR_ERR(pinode);
- 		goto out;
- 	}
+ 	/* Check if the inode already has a COW inode */
+ 	if (fi->cow_inode == NULL) {
+ 		/* Create a COW inode for atomic write */
+ 		pinode = f2fs_iget(inode->i_sb, fi->i_pino);
+ 		if (IS_ERR(pinode)) {
+ 			f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
+ 			ret = PTR_ERR(pinode);
+ 			goto out;
+ 		}
  
- 	ret = f2fs_get_tmpfile(idmap, pinode, &fi->cow_inode);
- 	iput(pinode);
- 	if (ret) {
- 		f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
- 		goto out;
 -		ret = f2fs_get_tmpfile(mnt_userns, pinode, &fi->cow_inode);
++		ret = f2fs_get_tmpfile(idmap, pinode, &fi->cow_inode);
+ 		iput(pinode);
+ 		if (ret) {
+ 			f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
+ 			goto out;
+ 		}
+ 
+ 		set_inode_flag(fi->cow_inode, FI_COW_FILE);
+ 		clear_inode_flag(fi->cow_inode, FI_INLINE_DATA);
+ 	} else {
+ 		/* Reuse the already created COW inode */
+ 		f2fs_do_truncate_blocks(fi->cow_inode, 0, true);
  	}
  
  	f2fs_write_inode(inode, NULL);
diff --cc fs/f2fs/namei.c
index d8e01bbbf27f,f9aafb7ac44d..11fc4c8036a9
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@@ -923,13 -923,10 +923,10 @@@ static int f2fs_tmpfile(struct mnt_idma
  	return finish_open_simple(file, err);
  }
  
 -static int f2fs_create_whiteout(struct user_namespace *mnt_userns,
 +static int f2fs_create_whiteout(struct mnt_idmap *idmap,
  				struct inode *dir, struct inode **whiteout)
  {
- 	if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
- 		return -EIO;
- 
 -	return __f2fs_tmpfile(mnt_userns, dir, NULL,
 +	return __f2fs_tmpfile(idmap, dir, NULL,
  				S_IFCHR | WHITEOUT_MODE, true, whiteout);
  }