Bug 13603 - Fallocate and DirectIO
Summary: Fallocate and DirectIO
Alias: None
Product: File System
Classification: Unclassified
Component: ext4 (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: fs_ext4@kernel-bugs.osdl.org
Depends on:
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


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


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.

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

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