lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 06 Mar 2012 11:42:21 -0700 From: Allison Henderson <achender@...ux.vnet.ibm.com> To: "Ted Ts'o" <tytso@....edu>, Lukas Czerner <lczerner@...hat.com>, Ext4 Developers List <linux-ext4@...r.kernel.org> Subject: Re: [PATCH 1/1] ext4: Remove empty index blocks when punching holes On 03/06/2012 11:37 AM, Allison Henderson wrote: > On 03/06/2012 09:44 AM, Ted Ts'o wrote: >> On Tue, Mar 06, 2012 at 08:11:37AM +0100, Lukas Czerner wrote: >>> >>> you're right my patches solves this problem (as I wrote in the commit >>> description) just because we now use a different code paths, which do >>> not have this problem. >> >> Ok, thanks. I'll look at them before the end of this week. >> >> Just to be clear, have the problematic code paths been removed in your >> patches, or are they not just being used in the problem scenario? >> Basically, is there any other time where we might need the additional >> logic which Allison added? >> >> - Ted >> > > Hi Ted, > > I think we will be ok with out this patch if we pick up Lukas's patches. > Since the new implementation is seated inside ext4_ext_remove_space, > Lukas can take advantage of the existing code there. > > In the current solution, we are seated inside map blocks, and then call > ext4_ext_rm_leaf from there. The bug in the current solution was that we > needed to free index blocks in the path to the extent we just removed, > but ext4_ext_remove_space will do this as it walks over the tree. > > There are some things in the new implementation that Lukas and I are > looking at, but once we get it straightened out, I think it will be ok > to let this patch go. Thx! > > Allison Henderson > forgot to reply to all. Resending to keep everyone posted :) -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists