From: Jeff Garzik <jeff@garzik.org>
To: Jens Axboe <axboe@suse.de>, Linux Kernel <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@osdl.org>,
SCSI Mailing List <linux-scsi@vger.kernel.org>,
Linux RAID Mailing List <linux-raid@vger.kernel.org>
Subject: Getting 'sync' to flush disk cache?
Date: Mon, 14 Aug 2006 14:39:47 -0400 [thread overview]
Message-ID: <44E0C373.6060008@garzik.org> (raw)
So... has anybody given any thought to enabling fsync(2), fdatasync(2),
and sync_file_range(2) issuing a [FLUSH|SYNCHRONIZE] CACHE command?
This has bugged me for _years_, that Linux does not do this. Looking at
forums on the web, it bugs a lot of other people too.
My suggestion would be to add a FLUSH op alongside the existing READ and
WRITE[_SYNC] ops, rather than passing down WRITE_SYNC. Why? Doing so
maintains a 1-1 translation between requests and disk commands, and it
would allow MD and DM more flexibility in handling this operation.
But that's just a guess. I'm open to suggestions.
Jeff
next reply other threads:[~2006-08-14 18:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-14 18:39 Jeff Garzik [this message]
2006-08-14 19:34 ` Getting 'sync' to flush disk cache? Arjan van de Ven
2006-08-14 20:15 ` Jens Axboe
2006-08-14 21:04 ` Jeff Garzik
[not found] <fa.W0uMWcngieRXsM23OSdM5c2wdZI@ifi.uio.no>
[not found] ` <fa.qZ/OWlxPTq6xK9TZx+9e39itX9k@ifi.uio.no>
[not found] ` <fa.PWNfC1odploxRBgLE1vdR69UF9s@ifi.uio.no>
2006-08-14 23:09 ` Robert Hancock
2006-08-15 5:45 ` Jens Axboe
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