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
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Fri, 22 Dec 2006 23:20:08 +0300
From:	Alex Tomas <alex@...sterfs.com>
To:	linux-ext4@...r.kernel.org
CC:	<linux-kernel@...r.kernel.org>, alex@...sterfs.com
Subject: [RFC] delayed allocation for ext4


Good day,

probably the previous set of patches (including mballoc/lg)
is too large. so, I reworked delayed allocation a bit so
that it can be used on top of regular balloc, though it
still can be used with extents-enabled files only.

this time series contains just 3 patches:

 - booked-page-flag.patch
   adds PG_booked bit to page->flags. it's used in delayed
   allocation to mark space is already reserved for page
   (including possible metadata)

 - ext4-block-reservation.patch
   this is scalable free space management. every time we
   delay allocation of some page, a space (including metadata)
   should be reserved

 - ext4-delayed-allocation.patch
   delayed allocation itself, enabled by "delalloc" mount option.
   extents support is also required. currently it works only
   with blocksize=pagesize.


all the patches can be used in ftp://ftp.clusterfs.com/pub/people/alex/2.6.20-rc1/

the series passed basic tests like dd/dbench/fsx.

any comments/questions are very welcome.

thanks, Alex
-
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