Messages in this thread | | | Date | Fri, 04 Jul 2014 00:08:59 +0530 | From | Raghavendra K T <> | Subject | Re: [PATCH] mm readahead: Fix sys_readahead breakage by reverting 2MB limit (bug 79111) |
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On 07/03/2014 11:59 PM, Linus Torvalds wrote: > On Thu, Jul 3, 2014 at 11:22 AM, Linus Torvalds > <torvalds@linux-foundation.org> wrote: >> >> So the bugzilla entry worries me a bit - we definitely do not want to >> regress in case somebody really relied on timing - but without more >> specific information I still think the real bug is just in the >> man-page. > > Side note: the 2MB limit may be too small. 2M is peanuts on modern > machines, even for fairly slow IO, and there are lots of files (like > glibc etc) that people might want to read-ahead during boot. We > already do bigger read-ahead if people just do "read()" system calls. > So I could certainly imagine that we should increase it. > > I do *not* think we should bow down to insane man-pages that have > always been wrong, though, and I don't think we should increase it to > "let's just read-ahead a whole ISO image" kind of sizes..
Okay, how about something like 256MB? I would be happy to send a patch for that change.
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