From: David Chow <davidchow@shaolinmicro.com>
To: linux-fsdevel@vger.kernel.org
Subject: write back caching, async writes
Date: Sun, 21 Apr 2002 01:56:39 +0800 [thread overview]
Message-ID: <3CC1ABD7.3040800@shaolinmicro.com> (raw)
If I want to implement a write back cache or async write in an fs, how
can I make vfs call back to write by cache or any way to schedule some
tasks so that the kernel will commit the current task but have a call
back later? For filesystem methods, it seems it is a process context
stuff, the only way I can think is to use mark_inode_dirty() so that vfs
will call my write_inode() super_block_ops so that it works like
schedule something to write later. If so, how can I retain the page
cache that has already called to my commit_write() so that those clean
pages (actually not in disk for async case) can be retained and I can
make use of those pages when I actuallly sync the data to disk. Or
should I have a private researved area of buffer to take care of those
async pages? Please give suggestions. Thanks.
David
reply other threads:[~2002-04-20 17:56 UTC|newest]
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