lkml.org 
[lkml]   [2012]   [Jan]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3] fs: Invalidate the cache for a parent block-device if fsync() is called for a partition
On 01/26/2012 09:45 PM, Christoph Hellwig wrote:
> On Thu, Jan 26, 2012 at 01:40:51PM -0800, Andrew Morton wrote:
>> The Right Thing To Do here is to make the kernel behave logically and
>> predictably, then modify the userspace tools. But if we're modifying
>> the userspace tools then we would just change userspace to issue a
>> BLKFLSBUF to /dev/sda and leave the kernel alone.
>
> The right fix is to make partition and whole disk access coherent,
> which is fairly simply:
>
> - create the block device inode/mapping per gendisk, and only reference
> count it per block_device
> - make sure blkdev_get_block(s) applies the correct offset if used on
> partitions
>

This surely looks like a better way to fix this issue. I am not sure yet
how much work that would involve and if I am the right person to fix
this. If nobody beats me to it, I might send a patch for review some
(undefined) time later.

Thanks for the suggestions,
Niels


\
 
 \ /
  Last update: 2012-01-31 17:05    [W:0.092 / U:0.220 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site