Bug 13603 - Fallocate and DirectIO
Summary: Fallocate and DirectIO
Status: RESOLVED CODE_FIX
Alias: None
Product: File System
Classification: Unclassified
Component: ext4 (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: fs_ext4@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-06-22 16:47 UTC by Aneesh Kumar K.V
Modified: 2010-03-06 08:45 UTC (History)
1 user (show)

See Also:
Kernel Version:
Tree: Mainline
Regression: No


Attachments

Description Aneesh Kumar K.V 2009-06-22 16:47:18 UTC
Have a kernel.org bugzilla entry to track the bug.

http://article.gmane.org/gmane.comp.file-systems.ext4/13762

I noticed yesterday that a write to fallocate
space via directIO results in fallback to buffer_IO. ie the userspace
pages get copied to the page cache and then call a sync.

I guess this defeat the purpose of using directIO. May be we should
consider this a high priority bug.

-aneesh
Comment 1 Eric Sandeen 2010-03-04 17:32:57 UTC
This is all fixed with mingming's patches now, right?
Comment 2 Aneesh Kumar K.V 2010-03-06 08:45:54 UTC
yes ,with the changes from mingming  we should be able to close the bug

Note You need to log in before you can comment on or make changes to this bug.