Re: [PATCH 3/7] minix: don't flush page immediately for DIRSYNC directories

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On Tue, Jan 10, 2023 at 09:22:25AM +0100, Christoph Hellwig wrote:
> On Sun, Jan 08, 2023 at 09:17:26PM +0000, Matthew Wilcox wrote:
> > > +	dir_commit_chunk(page, pos, sbi->s_dirsize);
> > >  	dir->i_mtime = dir->i_ctime = current_time(dir);
> > >  	mark_inode_dirty(dir);
> > > +	minix_handle_dirsync(dir);
> > 
> > Doesn't this need to be:
> > 
> > 	err = minix_handle_dirsync(dir);
> 
> Yes, fixed.
> 
> > 
> > > @@ -426,7 +436,7 @@ void minix_set_link(struct minix_dir_entry *de, struct page *page,
> > >  			((minix3_dirent *) de)->inode = inode->i_ino;
> > >  		else
> > >  			de->inode = inode->i_ino;
> > > -		err = dir_commit_chunk(page, pos, sbi->s_dirsize);
> > > +		dir_commit_chunk(page, pos, sbi->s_dirsize);
> > >  	} else {
> > >  		unlock_page(page);
> > >  	}
> > > -- 
> > 
> > Aren't you missing a call to minix_handle_dirsync() in this function?
> 
> Yes, fixed.

More seriously, all those ..._set_link() need to return an error and their
callers (..._rename()) need to deal with failures.  That goes for ext2
as well, and that part is worth splitting off into a prereq - it's a -stable
fodder.




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