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authorHugh Dickins <hugh@veritas.com>2008-11-19 15:36:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-19 18:49:59 -0800
commitf9454548e17cd56bad081bd7d55a09b001950cbb (patch)
treedd1d2000dbdae6d9baa638d5166b268ec40e8445 /drivers
parent63eb6b93ce725e4c5f38fc85dd703d49465b03cb (diff)
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>
Diffstat (limited to 'drivers')
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