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swapfile: let others seed random 

Remove the srandom32((u32)get_seconds()) from non-rotational swapon:
there's been a coincidental discussion of earlier randomization, assume
that goes ahead, let swapon be a client rather than stirring for itself.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Donjun Shin <djshin90@gmail.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Joern Engel <joern@logfs.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Tejun Heo <teheo@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Hugh Dickins 2009-01-06 14:39:57 -08:00 committed by Linus Torvalds
parent 858a29900e
commit f0d7a4b3ed
1 changed files with 0 additions and 1 deletions
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mm/swapfile.c
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@ -1851,7 +1851,6 @@ asmlinkage long sys_swapon(const char __user * specialfile, int swap_flags)
if (blk_queue_nonrot(bdev_get_queue(p->bdev))) {
p->flags |= SWP_SOLIDSTATE;
srandom32((u32)get_seconds());
p->cluster_next = 1 + (random32() % p->highest_bit);
}
if (discard_swap(p) == 0)