]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
don't unlink an active swapfile
authorHugh Dickins <hugh@veritas.com>
Wed, 19 Nov 2008 23:36:38 +0000 (15:36 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 20 Nov 2008 02:49:59 +0000 (18:49 -0800)
commitf9454548e17cd56bad081bd7d55a09b001950cbb
treedd1d2000dbdae6d9baa638d5166b268ec40e8445
parent63eb6b93ce725e4c5f38fc85dd703d49465b03cb
don't unlink an active swapfile

Peter Cordes is sorry that he rm'ed his swapfiles while they were in use,
he then had no pathname to swapoff.  It's a curious little oversight, but
not one worth a lot of hackery.  Kudos to Willy Tarreau for turning this
around from a discussion of synthetic pathnames to how to prevent unlink.
Mimic immutable: prohibit unlinking an active swapfile in may_delete()
(and don't worry my little head over the tiny race window).

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Willy Tarreau <w@1wt.eu>
Acked-by: Christoph Hellwig <hch@infradead.org>
Cc: Peter Cordes <peter@cordes.ca>
Cc: Bodo Eggert <7eggert@gmx.de>
Cc: David Newall <davidn@davidnewall.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/namei.c