Theodore Tso wrote:
FYI, we are currently closing on a new system call so that
glibc's fallocate() will be able to call into the appropriate
per-filesystem routines in a portable way, since ext4 will have
persistent preallocation support.
Yep.
I think we mostly have consensus on a calling convention which
all of the architectures (s390, power, arm, ia64, etc.); of course
then we will need to get glibc to support the new system call.
glibc has had support for a while, in emulated form:
http://www.uwsg.iu.edu/hypermail/linux/kernel/0004.1/1153.html
So when kernel support arrives, it should be easy and (hopefully)
seamless to plug in the new syscall.
Jeff
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