RE: [PATCH RFC] introduce ioctl to completely invalidate page cache

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



> > -		fsync_bdev(bdev);
> > -		invalidate_bdev(bdev);
> > +		flush_buffer_cache(bdev);
> > +		if (BLKFLSBUF2 == cmd)
> > +			return invalidate_inode_pages2(
> > +					bdev->bd_inode->i_mapping);
> >  		return 0;
> 
> We're currently ignoring the buffer cache sync and invalidation (which is odd),
> but at least being consistent would be good.
> 
> Might also need a filemap_write_and_wait() to sync before invalidation.

(I've got zero knowledge in this area, so excuse my ignorance!)

Does filemap_write_and_wait() writes back modified, memory-mapped pages? If so, isn't there a race condition? Or have I got it completely wrong?
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux