lkml.org 
[lkml]   [2001]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] direct IO breaks root filesystem

On Tue, 11 Dec 2001, GOTO Masanori wrote:
> I, however, found another problem.
> Accessing with inode size unit (== 4096 byte) is ok, but if I accessed
> with block size unit, generic_direct_IO() returns error. The reason
> is that blocksize is designated as inode->i_blkbits, and its value is
> not disk minimal block size (512), but inode's unit size (4096).

That is not a bug, but a feature.

We _always_ have to do the IO in "inode size" chunks, and if you want to
change it, you have to change it at a higher level (ie you should set the
blocksize with the "BLKBSZSET" ioctl.)

Linus

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:14    [W:0.137 / U:0.304 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site