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SubjectRe: [GIT PULL] f2fs update for 4.16-rc1
On 01/31, Stephen Rothwell wrote:
> Hi all,
>
> On Tue, 30 Jan 2018 14:32:20 -0800 Jaegeuk Kim <jaegeuk@kernel.org> wrote:
> >
> > Could you please consider the below pull request?
> >
> > Thanks,
> >
> > The following changes since commit ace52288edf0cb5e7a52b681f057f86224c49c27:
> >
> > Merge tag 'for-linus-20171218' of git://git.infradead.org/linux-mtd (2017-12-18 16:18:01 -0800)
> >
> > are available in the Git repository at:
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git tags/f2fs-for-4.16-rc1
> >
> > for you to fetch changes up to 1c1d35df71104c76a4a2e25862926f22c334c9d6:
> >
> > f2fs: support inode creation time (2018-01-25 14:10:39 -0800)
>
> This has an interesting conflict with the btrfs tree:
>
> -----------------------------------------------------------------------
> After merging the f2fs tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
>
> /home/sfr/next/next/fs/f2fs/super.c: In function 'f2fs_fill_super':
> /home/sfr/next/next/fs/f2fs/super.c:2563:18: error: 'SB_I_CGROUPWB' undeclared (first use in this function); did you mean 'S_CGROUPWB'?
> sb->s_iflags |= SB_I_CGROUPWB;
> ^~~~~~~~~~~~~
> S_CGROUPWB
>
> Caused by commit
>
> 578c647879f7 ("f2fs: implement cgroup writeback support")
>
> interacting with commit
>
> 34934189a3dd ("cgroup, writeback: replace SB_I_CGROUPWB with per-inode S_CGROUPWB"
>
> from the btrfs tree.
>
> I have reverted the f2fs tree commit for today, but a better resolution
> would be appreciated.
> -----------------------------------------------------------------------
>
> I have seen no response to the above email and have been reverting that
> commit since Jan 18.

I think this can be addressed by:

diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 89c838bfb067..c743b73976d0 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -48,9 +48,10 @@ void f2fs_set_inode_flags(struct inode *inode)
new_fl |= S_DIRSYNC;
if (f2fs_encrypted_inode(inode))
new_fl |= S_ENCRYPTED;
+ new_fl |= S_CGROUPWB;
inode_set_flags(inode, new_fl,
S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
- S_ENCRYPTED);
+ S_ENCRYPTED|S_CGROUPWB);
}

static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 8173ae688814..ebcd58476fc7 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2560,7 +2560,6 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
(test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
- sb->s_iflags |= SB_I_CGROUPWB;

/* init f2fs-specific super block info */
sbi->valid_super_block = valid_super_block;
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