tree e8c9dd746bfd8ae16d17596009608c4c1a153217
parent 49d4914fd7c10ae846d0f30d5f6f4732cc68499c
author Miklos Szeredi <mszeredi@suse.cz> 1192702020 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1192743450 -0700

VFS: allow filesystems to implement atomic open+truncate

Add a new attribute flag ATTR_OPEN, with the meaning: "truncation was
initiated by open() due to the O_TRUNC flag".

This way filesystems wanting to implement truncation within their ->open()
method can ignore such truncate requests.

This is a quick & dirty hack, but it comes for free.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>