search for: overzealous

The 'disable_cb' callback is designed as an optimization to tell the host we don't need callbacks now. As it is not reliable, the debug check is overzealous: it can happen on two CPUs at the same time. Document this. Even if it were reliable, the virtio_net driver doesn't disable callbacks on transmit so the START_USE/END_USE debugging reentrance protection can be easily tripped even on UP. Thanks to Balaji Rao for the bug report and testing. S...

The 'disable_cb' callback is designed as an optimization to tell the host we don't need callbacks now. As it is not reliable, the debug check is overzealous: it can happen on two CPUs at the same time. Document this. Even if it were reliable, the virtio_net driver doesn't disable callbacks on transmit so the START_USE/END_USE debugging reentrance protection can be easily tripped even on UP. Thanks to Balaji Rao for the bug report and testing. S...

Hi, I've got a MSAccess database on a linux server (fedora core 5, samba 3, 192.168.0.90) which a Win XP client machine needs to use (192.168.0.50). However, Access refuses to open the database because "it's not on the LAN so is a security risk". How can I configure Samba so that Windows recognises 192.168.0.90 as a local machine, please? Jim Donovan Office +61+2-8923-5208

The 'disable_cb' is really just a hint and as such, it's possible for more work to get queued up while callbacks are disabled. Under stress with an SMP guest, this printk triggers very frequently. There is no race here, this is how things are designed to work so let's just remove the printk. Signed-off-by: Anthony Liguori <aliguori at us.ibm.com> Acked-by: Rusty Russell

The 'disable_cb' is really just a hint and as such, it's possible for more work to get queued up while callbacks are disabled. Under stress with an SMP guest, this printk triggers very frequently. There is no race here, this is how things are designed to work so let's just remove the printk. Signed-off-by: Anthony Liguori <aliguori at us.ibm.com> Acked-by: Rusty Russell

When transferring DMA ownership back to the CPU there should never be any writeback from the cache, as the buffer was owned by the device until now. Instead it should just be invalidated for the mapping directions where the device could have written data. Note that the changes rely on the fact that kmap_atomic is stubbed out for the !HIGHMEM case to simplify the code a bit. Signed-off-by:

On Sep 23, 2008, at 4:16 AM, Matthijs Kooijman wrote: > >> and then does a load or store at the higher alignment, is >> invoking undefined behavior. The alignment attribute on a load or >> store >> is an assertion about the actual alignment of the memory. > Should this undefined behaviour be caught by the verifier, or is it > ok for it > to exist? I

Hi Matthijs, Changing PromoteCastOfAllocation to not replace aggregate allocas with non-aggregate allocas if they have GEP users sounds reasonable to me. Finding the maximum alignment is sometimes still useful though, so it would be nice to update the alignment field of the alloca even if its type is left unchanged. Dan On Sep 8, 2008, at 8:57 AM, Matthijs Kooijman wrote: > Hi all, >

Starting html help in the current version of R has a very annoying side-effect. It indiscriminantly removes $HOME/.R, and replaces it with a virgin copy. I discovered that when all of a sudden I got complaints about my startup "library" not being found. Below is a modified version of the script that doesn't do this. It is not perfect yet (it shouldn't try to recreate links

Hello again, I was testing today's SNAP (openssh-SNAP-20000830.tar.gz) in my Solaris 2.6-8 environment, when I found some problems with the ssh2 support. While connecting, it seeds the RNG something like 32 times! And then once connected, it seeds again 2 or 3 times with *every* keystroke! This makes for some slow going. This happens on all of the Solaris boxes I tried. Binary was

Hi NG, I want to do incremental backups to a remote server running rsyncd (because daemonless transfer via ssh often hangs!). In contrast to transfer via ssh (without remote rsyncd) this doesn't seem possible, or do I miss something? Imagine I want to incrementally backup `mydir' to the backup space `backup' on e remote server `alpha' running an rsync daemon. rsyncd on

On Sep 13, 2008, at 1:07 PM, Matthijs Kooijman wrote: > Hi Dan, > >> Changing PromoteCastOfAllocation to not replace aggregate allocas >> with >> non-aggregate allocas if they have GEP users sounds reasonable to me. > This sounds reasonable indeed, but still a bit arbitrary. Haven't > figured out > anything better yet, though. > >> Finding the

...s, e.g. > x <- c(NA, NaN) > mean(x) [1] NA > mean(rev(x)) [1] NA [...] Before going insane trying to troubleshoot this, I have a vague memory that this, or something related to this, has been discussed previously, but I cannot locate it. Is the above a bug in R, a FAQ, a build error, overzealous compiler optimization, and / or ...? Thanks, Henrik

...class(o), inherits(o,"AsIs") is TRUE. In that case, by recycling of logical index, class(o)[!inherits(o,"AsIs")] removes all elements of class(o), giving character(0). > Thank you, Suharto ! > You are obviously right, and I'm a bit embarrassed by my > overzealousness to follow my own recommendations in the R Blog > http://bit.ly/R_blog_class_think_2x > {*wrongly*: The recommendation was to "think again" ...} > It's a "shame" that the wrong code did not trigger any checks, > so if anybody has time... I&...

I got overzealous with snapshot creation. Every 5 mins is a bad idea. Way too many. What''s the easiest way to delete the empty ones? zfs list takes FOREVER

Hi Dan, > Changing PromoteCastOfAllocation to not replace aggregate allocas with > non-aggregate allocas if they have GEP users sounds reasonable to me. This sounds reasonable indeed, but still a bit arbitrary. Haven't figured out anything better yet, though. > Finding the maximum alignment is sometimes still useful though, so > it would be nice to update the alignment field of

Hi all, I'm currently running into some problems with instcombine changing the type of alloca instructions. In particular, the PromoteCastOfAllocation looks at any allocation instruction that is used by a bitast. It does a few checks, but basically tries to change the type of the alloca instruction to the type pointed to by the bitcasted type. The current heuristic for determining if this is

I''m building a site that requires user log-in and i have seen the Agile book using sha1 for password hashing while R-Forum uses md5. Is there any compelling argument to use one over the other? -- Posted via http://www.ruby-forum.com/.

...ed in .hidden_file_exclusions. - typical Mac Finder files .DS_Store All of these are ignored when executing R CMD check --as-cran. I can't remove the .hg* files and directories. I could remove the .DS_Store files to avoid the note. The note is harmless but annoying and strikes me as slightly overzealous. Berend

Hi Dan, > Oh, ok. So code that takes an alloca, bitcasts the address to a higher > alignment, Since alignment is not a property of a type, I don't think you can "bitcast to a higher alignment" as such. I still understand what you mean, though :-) > and then does a load or store at the higher alignment, is > invoking undefined behavior. The alignment attribute on a load