lkml.org 
[lkml]   [2018]   [Apr]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH] fs: introduce ST_HUGE flag and set it to tmpfs and hugetlbfs
On Wed, Apr 18, 2018 at 11:18:25AM -0700, Yang Shi wrote:
> Yes, thanks for the suggestion. I did think about it before I went with the
> new flag. Not like hugetlb, THP will *not* guarantee huge page is used all
> the time, it may fallback to regular 4K page or may get split. I'm not sure
> how the applications use f_bsize field, it might break existing applications
> and the value might be abused by applications to have counter optimization.
> So, IMHO, a new flag may sound safer.

But st_blksize isn't the block size, that is why I suggested it. It is
the preferred I/O size, and various file systems can report way
larger values than the block size already.

\
 
 \ /
  Last update: 2018-04-19 10:29    [W:0.772 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site