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 [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [patch 3/5] VFS: pass open file to ->xattr()
    • From: Miklos Szeredi <[email protected]>

• References:
  • [patch 0/5] VFS changes
    • From: Miklos Szeredi <[email protected]>
  • [patch 3/5] VFS: pass open file to ->xattr()
    • From: Miklos Szeredi <[email protected]>
  • Re: [patch 3/5] VFS: pass open file to ->xattr()
    • From: Christoph Hellwig <[email protected]>
  • Re: [patch 3/5] VFS: pass open file to ->xattr()
    • From: Miklos Szeredi <[email protected]>
  • Re: [patch 3/5] VFS: pass open file to ->xattr()
    • From: Christoph Hellwig <[email protected]>
  • Re: [patch 3/5] VFS: pass open file to ->xattr()
    • From: Miklos Szeredi <[email protected]>
  • Re: [patch 3/5] VFS: pass open file to ->xattr()
    • From: Trond Myklebust <[email protected]>
  • Re: [patch 3/5] VFS: pass open file to ->xattr()
    • From: Christoph Hellwig <[email protected]>
  • Re: [patch 3/5] VFS: pass open file to ->xattr()
    • From: Miklos Szeredi <[email protected]>

• Prev by Date: Re: [RFC][PATCH] page->mapping clarification [1/3] base functions
• Next by Date: Re: [2.6.22.6] nfsd: fh_verify() `malloc failure' with lots of free memory leads to NFS hang
• Previous by thread: Re: [patch 3/5] VFS: pass open file to ->xattr()
• Next by thread: Re: [patch 3/5] VFS: pass open file to ->xattr()
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]