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frontswap: make frontswap_init use a pointer for the ops

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This simplifies the code in the frontswap - we can get rid of the
'backend_registered' test and instead check against frontswap_ops.

[v1: Rebase on top of 703ba7fe5e (ramster->zcache move]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Andor Daam <andor.daam@googlemail.com>
Cc: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Florian Schmaus <fschmaus@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Stefan Hengelein <ilendir@googlemail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Konrad Rzeszutek Wilk 2013-04-30 15:26:51 -07:00 • committed by Linus Torvalds
parent 905cd0e1bf
commit 1e01c968db
4 changed files with 26 additions and 28 deletions
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2
include/linux/frontswap.h
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@ -14,7 +14,7 @@ struct frontswap_ops {
};
extern bool frontswap_enabled;
extern struct frontswap_ops
extern struct frontswap_ops *
frontswap_register_ops(struct frontswap_ops *ops);
extern void frontswap_shrink(unsigned long);
extern unsigned long frontswap_curr_pages(void);