Messages in this thread | | | Date | Wed, 31 Jan 2007 18:14:20 -0600 | From | Robert Hancock <> | Subject | Re: 2.6.20-rc6 ramdisk problem |
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Thomas Gleixner wrote: > On Wed, 2007-01-31 at 17:54 -0600, Robert Hancock wrote: >> I'm not sure if there's an inherent max ramdisk size limit, however I >> should point out that in most cases, using a tmpfs or ramfs file system >> is better than old-style ramdisks. Those filesystems return unused >> memory to the kernel (ramdisks statically allocate the entire space) and >> also avoid the filesystem overhead of ramdisks (the files are mapped >> into pagecache directly). > > This is not a question of what's better or not. > > Michal stepped into a real life problem: > > 1. ramdisk gets created in the first place w/o problems > 2. formatting the same ramdisk succeeds > 3. trying to use it fails > > So either #1 or #2 should have failed in the first place. Failing in #3 > is definitely a BUG in #1 or #2. > > How does your advise help to fix that BUG ? Ignoring it by using > something else ?
Yes, there is likely a bug here of some sort. However, that doesn't change the fact that ramdisks are sub-optimal for most uses.
-- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/
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