lkml.org 
[lkml]   [2019]   [Apr]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v4 5/5] xfs: disable map_sync for async flush
On Thu, Apr 04, 2019 at 02:12:30AM -0400, Pankaj Gupta wrote:
> > All this ad hoc IS_DAX conditional logic is getting pretty nasty.
> >
> > xfs_file_mmap(
> > ....
> > {
> > struct inode *inode = file_inode(filp);
> >
> > if (vma->vm_flags & VM_SYNC) {
> > if (!IS_DAX(inode))
> > return -EOPNOTSUPP;
> > if (!dax_synchronous(xfs_find_daxdev_for_inode(inode))
> > return -EOPNOTSUPP;
> > }
> >
> > file_accessed(filp);
> > vma->vm_ops = &xfs_file_vm_ops;
> > if (IS_DAX(inode))
> > vma->vm_flags |= VM_HUGEPAGE;
> > return 0;
> > }
>
> Sure, this is better.

> > Even better, factor out all the "MAP_SYNC supported" checks into a
> > helper so that the filesystem code just doesn't have to care about
> > the details of checking for DAX+MAP_SYNC support....
>
> o.k. Will add one common helper function for both ext4 & xfs filesystems.

Note this pending patch for Goldwyn Rodrigues' patchset for btrfs:

https://lore.kernel.org/linux-btrfs/20190328102418.5466-1-kilobyte@angband.pl/

We might want to coordinate.


Meow!
--
⢀⣴⠾⠻⢶⣦⠀
⣾⠁⢠⠒⠀⣿⡁ Did ya know that typing "test -j8" instead of "ctest -j8"
⢿⡄⠘⠷⠚⠋⠀ will make your testsuite pass much faster, and fix bugs?
⠈⠳⣄⠀⠀⠀⠀

\
 
 \ /
  Last update: 2019-04-04 11:57    [W:0.070 / U:37.244 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site