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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On Mar 05, 2026 / 09:38, Chao Yu wrote: > On 2026/3/4 16:55, Chao Yu wrote: > > On 2026/3/4 12:57, Shinichiro Kawasaki wrote: [...] > > > I will seek out other ways to avoid the lockdep. I have no idea how t= o do that > > > at this moment, though. > > = > > Shinichiro, > > = > > IMO, this looks like a false alarm of lockdep, what do you think of thi= s fix? > > = > > https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?= h=3Dbugfix/syzbot&id=3D3b19564b95e9ba9803ef30e90eace0977b9d140d > > = > > --- > > =A0fs/f2fs/f2fs.h=A0 | 3 +++ > > =A0fs/f2fs/super.c | 3 +++ > > =A02 files changed, 6 insertions(+) > > = > > diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h > > index bb34e864d0ef..5b400e99f332 100644 > > --- a/fs/f2fs/f2fs.h > > +++ b/fs/f2fs/f2fs.h > > @@ -2042,6 +2042,9 @@ struct f2fs_sb_info { > > =A0=A0=A0=A0=A0=A0=A0 spinlock_t iostat_lat_lock; > > =A0=A0=A0=A0=A0=A0=A0 struct iostat_lat_info *iostat_io_lat; > > =A0#endif > > +#ifdef CONFIG_DEBUG_LOCK_ALLOC > > +=A0=A0=A0=A0=A0=A0 struct lock_class_key cp_global_sem_key; > > +#endif > > =A0}; > > = > > =A0/* Definitions to access f2fs_sb_info */ > > diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c > > index 8774c60b4be4..9e85f31fa828 100644 > > --- a/fs/f2fs/super.c > > +++ b/fs/f2fs/super.c > > @@ -4948,6 +4948,9 @@ static int f2fs_fill_super(struct super_block *sb= , struct fs_context *fc) > > =A0=A0=A0=A0=A0=A0=A0 init_f2fs_rwsem_trace(&sbi->gc_lock, sbi, LOCK_N= AME_GC_LOCK); > > =A0=A0=A0=A0=A0=A0=A0 mutex_init(&sbi->writepages); > > =A0=A0=A0=A0=A0=A0=A0 init_f2fs_rwsem_trace(&sbi->cp_global_sem, sbi, = LOCK_NAME_CP_GLOBAL); > > +#ifdef CONFIG_DEBUG_LOCK_ALLOC > > +=A0=A0=A0=A0=A0=A0 lockdep_set_class(&sbi->cp_global_sem, &sbi->cp_glo= bal_sem_key); > = > Sorry, should be: > = > + lockdep_set_class(&sbi->cp_global_sem.internal_rwsem, > + &sbi->cp_global_sem_key); > = > Thanks, Chao, thank you very much for the idea and the trial patch! I will try it o= ut. Let me have a day or two. _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel