Re: [PATCH] f2fs: opt in to multigrain timestamps

[Chao Yu <chao@kernel.org>]

On 10/12/26 23:46, Jeff Layton wrote:
> Set FS_MGTIME on f2fs_fs_type.
> 
> f2fs meets the multigrain requirements:
> - ctime updates use inode_set_ctime_current()
> - f2fs_getattr() calls generic_fillattr()
> - f2fs_setattr() calls setattr_copy()
> - s_time_gran is 1ns
> 
> Exception: with CONFIG_F2FS_FS_POSIX_ACL, f2fs_setattr() uses a local
> __setattr_copy() that sets timestamps directly, bypassing
> setattr_copy_mgtime(). Make it call setattr_copy() with ATTR_MODE
> cleared, then do the f2fs mode/ACL handling as before. ACL builds now
> also honor ATTR_CTIME_SET via inode_set_ctime_deleg(), as non-ACL
> builds already do.
> 
> Assisted-by: LLM
> Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,