Re: [PATCH 00/17] VFS: Filesystem information and notifications [ver #17]

Karel Zak
2020-03-03T11:38:28Z

On Tue, Mar 03, 2020 at 10:26:21AM +0100, Miklos Szeredi wrote:
> No, I don't think this is going to be a performance issue at all, but
> if anything we could introduce a syscall
>
> ssize_t readfile(int dfd, const char *path, char *buf, size_t
> bufsize, int flags);

off-topic, but I'll buy you many many beers if you implement it ;-),
because open + read + close is pretty common for /sys and /proc in
many userspace tools; for example ps, top, lsblk, lsmem, lsns, udevd
etc. is all about it.

Karel

--
Karel Zak <kzak@redhat.com>