On Fri 08-01-21 23:58:56, Eric Biggers wrote:
> From: Eric Biggers <[email protected]>
> 
> There is no need to call ->dirty_inode for lazytime timestamp updates
> (i.e. for __mark_inode_dirty(I_DIRTY_TIME)), since by the definition of
> lazytime, filesystems must ignore these updates.  Filesystems only need
> to care about the updated timestamps when they expire.
> 
> Therefore, only call ->dirty_inode when I_DIRTY_INODE is set.
> 
> Based on a patch from Christoph Hellwig:
> https://lore.kernel.org/r/[email protected]
> 
> Reviewed-by: Christoph Hellwig <[email protected]>
> Signed-off-by: Eric Biggers <[email protected]>

Looks good to me. You can add:

Reviewed-by: Jan Kara <[email protected]>

                                                                Honza

> ---
>  fs/ext4/inode.c   | 12 +-----------
>  fs/f2fs/super.c   |  3 ---
>  fs/fs-writeback.c |  6 +++---
>  fs/gfs2/super.c   |  2 --
>  4 files changed, 4 insertions(+), 19 deletions(-)
> 
> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
> index 27946882d4ce4..4cc6c7834312f 100644
> --- a/fs/ext4/inode.c
> +++ b/fs/ext4/inode.c
> @@ -5933,26 +5933,16 @@ int __ext4_mark_inode_dirty(handle_t *handle, struct 
> inode *inode,
>   * If the inode is marked synchronous, we don't honour that here - doing
>   * so would cause a commit on atime updates, which we don't bother doing.
>   * We handle synchronous inodes at the highest possible level.
> - *
> - * If only the I_DIRTY_TIME flag is set, we can skip everything.  If
> - * I_DIRTY_TIME and I_DIRTY_SYNC is set, the only inode fields we need
> - * to copy into the on-disk inode structure are the timestamp files.
>   */
>  void ext4_dirty_inode(struct inode *inode, int flags)
>  {
>       handle_t *handle;
>  
> -     if (flags == I_DIRTY_TIME)
> -             return;
>       handle = ext4_journal_start(inode, EXT4_HT_INODE, 2);
>       if (IS_ERR(handle))
> -             goto out;
> -
> +             return;
>       ext4_mark_inode_dirty(handle, inode);
> -
>       ext4_journal_stop(handle);
> -out:
> -     return;
>  }
>  
>  int ext4_change_inode_journal_flag(struct inode *inode, int val)
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index b4a07fe62d1a5..cc98dc49f4a26 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -1196,9 +1196,6 @@ static void f2fs_dirty_inode(struct inode *inode, int 
> flags)
>                       inode->i_ino == F2FS_META_INO(sbi))
>               return;
>  
> -     if (flags == I_DIRTY_TIME)
> -             return;
> -
>       if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
>               clear_inode_flag(inode, FI_AUTO_RECOVER);
>  
> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
> index c41cb887eb7d3..b7616bbd55336 100644
> --- a/fs/fs-writeback.c
> +++ b/fs/fs-writeback.c
> @@ -2255,16 +2255,16 @@ void __mark_inode_dirty(struct inode *inode, int 
> flags)
>        * Don't do this for I_DIRTY_PAGES - that doesn't actually
>        * dirty the inode itself
>        */
> -     if (flags & (I_DIRTY_INODE | I_DIRTY_TIME)) {
> +     if (flags & I_DIRTY_INODE) {
>               trace_writeback_dirty_inode_start(inode, flags);
>  
>               if (sb->s_op->dirty_inode)
>                       sb->s_op->dirty_inode(inode, flags);
>  
>               trace_writeback_dirty_inode(inode, flags);
> -     }
> -     if (flags & I_DIRTY_INODE)
> +
>               flags &= ~I_DIRTY_TIME;
> +     }
>       dirtytime = flags & I_DIRTY_TIME;
>  
>       /*
> diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
> index 2f56acc41c049..042b94288ff11 100644
> --- a/fs/gfs2/super.c
> +++ b/fs/gfs2/super.c
> @@ -562,8 +562,6 @@ static void gfs2_dirty_inode(struct inode *inode, int 
> flags)
>       int need_endtrans = 0;
>       int ret;
>  
> -     if (!(flags & I_DIRTY_INODE))
> -             return;
>       if (unlikely(gfs2_withdrawn(sdp)))
>               return;
>       if (!gfs2_glock_is_locked_by_me(ip->i_gl)) {
> -- 
> 2.30.0
> 
-- 
Jan Kara <[email protected]>
SUSE Labs, CR


_______________________________________________
Linux-f2fs-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

Reply via email to