[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20070921184400.GQ32520@schatzie.adilger.int>
Date: Fri, 21 Sep 2007 12:44:00 -0600
From: Andreas Dilger <adilger@...sterfs.com>
To: Miklos Szeredi <miklos@...redi.hu>
Cc: hch@...radead.org, trond.myklebust@....uio.no,
akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
linux-fsdevel@...r.kernel.org
Subject: Re: [patch 3/5] VFS: pass open file to ->xattr()
On Sep 21, 2007 16:59 +0200, Miklos Szeredi wrote:
> What I'm saying is that read and write are _no_more_ related to the
> file than fstat. Read/write operate on inode data, fstat operates on
> inode metadata.
The read and write operations are DEFINITELY related to the file descriptor
because of f_pos. Each process opening the same file can have a different
f_pos so read/write will work in different locations of the file.
In contrast getattr and getxattr operate on the single inode and you don't
get e.g. a different i_size or i_uid or i_gid depending on who opened a
file, nor is the xattr different.
Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists