Messages in this thread | | | Date | Thu, 23 Apr 2009 07:11:47 -0400 | From | Christoph Hellwig <> | Subject | Re: [RFC PATCH] fpathconf() for fsync() behavior |
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On Wed, Apr 22, 2009 at 08:12:57PM -0400, Valerie Aurora Henson wrote: > In the default mode for ext3 and btrfs, fsync() is both slow and > unnecessary for some important application use cases - at the same > time that it is absolutely required for correctness for other modes of > ext3, ext4, XFS, etc. If applications could easilyl distinguish > between the two cases, they would be more likely to be correct and > fast. > > How about an fpathconf() variable, something like _PC_ORDERED? E.g.:
Before we add any new fpathconf varibale we need a reall (f)pathconf(at) syscall so that the fs driver can exposed it's characteristics, having to replicate that information to glibc especially for something required for data integrity is a receipe for a desaster.
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