Re: [PATCH 1/3] VFS "stat light" out of fstatat, and fine grainedflags

From: Jeff Garzik
Date: Tue Apr 07 2009 - 19:26:00 EST


Oleg Drokin wrote:
Hello!

This is reworked Mark Fasheh's patch + my earlier patch.
It allows one to specify which specific struct stat fields are needed
out of the fstatat call, and also a request to obtain most uptodate
information for inode (for NFS mostly).

Also it adds AT_STAT_SELF flag to mean that the stat should be executed not
on a path, but on the passed filedecriptor itself.

A first real kernel user for this added in loop block driver that does
not care about size or anything else besides rdev and inode number.

I see various architectures replicate bits of vfs_*stat* in some compat
code, I am not sure if we need to update those as well or not.

This patch does away with all the extra syscalls.


linux-kernel should be included in the discussion of this syscall.

Jeff


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