#ifndef RND_H #define RND_H #define HIG_ENTROPY_SOURCE "/dev/random" #define LOW_ENTROPY_SOURCE "/dev/urandom" /* secrand is not really secure, but the name only suggests it's better to use * than rand(3) when transferring bytes over the network in non-security * critical structure members. secrand() is only used to fill up salts actually. */ extern int secrand(void); extern void gen_key_bytes(unsigned char *area, size_t len); #endif /* RND_H */ /atom+xml'/>
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authorChristoph Hellwig <hch@lst.de>2017-02-05 18:10:35 +0100
committerJens Axboe <axboe@fb.com>2017-02-06 09:34:46 -0700
commiteeeefd41843218c55a8782a6920f044d9bf6207a (patch)
treec342eac46626e62745aa8e1a982626efca8b121d /net/sunrpc/xprtrdma/backchannel.c
parentc14024dbb156c8392908aaa822097d27c6af8ec8 (diff)
block: don't try Write Same from __blkdev_issue_zeroout
Write Same can return an error asynchronously if it turns out the underlying SCSI device does not support Write Same, which makes a proper fallback to other methods in __blkdev_issue_zeroout impossible. Thus only issue a Write Same from blkdev_issue_zeroout an don't try it at all from __blkdev_issue_zeroout as a non-invasive workaround. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Fixes: e73c23ff ("block: add async variant of blkdev_issue_zeroout") Tested-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/backchannel.c')