jxiong 24fa20340d Guarantee PAGESIZE alignment for large zio buffers
In current implementation, only zio buffers in 16KB and bigger are
guaranteed PAGESIZE alignment. This breaks Lustre since it assumes
that 'arc_buf_t::b_data' must be page aligned when zio buffers are
greater than or equal to PAGESIZE.

This patch will make the zio buffers to be PAGESIZE aligned when
the sizes are not less than PAGESIZE.

This change may cause a little bit memory waste but that should be
fine because after ABD is introduced, zio buffers are used to hold
data temporarily and live in memory for a short while.

Reviewed-by: Don Brady <don.brady@intel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Jinshan Xiong <jinshan.xiong@gmail.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Closes #6084
2017-05-02 10:04:30 -07:00
2017-01-03 11:31:18 -06:00
2014-09-02 14:18:53 -07:00
2015-05-11 15:07:00 -07:00
2017-01-20 10:18:28 -08:00
2008-12-01 14:49:34 -08:00
2017-04-06 17:15:30 -07:00

ZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the Illumos community.

ZFS on Linux, which is also known as ZoL, is currently feature complete. It includes fully functional and stable SPA, DMU, ZVOL, and ZPL layers. And it's native!

Official Resources

Installation

Full documentation for installing ZoL on your favorite Linux distribution can be found at our site.

Contribute & Develop

We have a separate document with contribution guidelines.

S
Description
No description provided
Readme 122 MiB
Languages
C 70.2%
Shell 19.9%
Assembly 5.1%
M4 1.9%
Python 1.6%
Other 1.3%