From: David Sterba <dsterba-AlSwsSmVLrQ@public.gmane.org>
To: dwarves-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Brain fart alert
Date: Wed, 11 Nov 2015 19:26:18 +0100 [thread overview]
Message-ID: <20151111182618.GF6445@suse.cz> (raw)
Hi,
with current git version 1.10 (79536f4f9587703c7136d2654824630689880f5c):
struct btrfs_path {
struct extent_buffer * nodes[8]; /* 0 64 */
/* --- cacheline 1 boundary (64 bytes) --- */
int slots[8]; /* 64 32 */
int locks[8]; /* 96 32 */
/* --- cacheline 2 boundary (128 bytes) --- */
u8 reada; /* 128 1 */
u8 lowest_level; /* 129 1 */
/* Bitfield combined with previous fields */
unsigned int search_for_split:1; /* 128:15 4 */
unsigned int keep_locks:1; /* 128:14 4 */
unsigned int skip_locking:1; /* 128:13 4 */
unsigned int leave_spinning:1; /* 128:12 4 */
unsigned int search_commit_root:1; /* 128:11 4 */
unsigned int need_commit_sem:1; /* 128:10 4 */
unsigned int skip_release_on_error:1; /* 128: 9 4 */
/* size: 136, cachelines: 3, members: 12 */
/* padding: 4 */
/* bit_padding: 25 bits */
/* last cacheline: 8 bytes */
/* BRAIN FART ALERT! 136 != 136 + 0(holes), diff = 0 */
};
Looks like it's the bitfield combining.
$ gcc --version
gcc (SUSE Linux) 4.5.1 20101208 [gcc-4_5-branch revision 167585]
binutils-2.23.2
Let me know if you need more information.
Thanks.
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next reply other threads:[~2015-11-11 18:26 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-11 18:26 David Sterba [this message]
[not found] ` <20151111182618.GF6445-AlSwsSmVLrQ@public.gmane.org>
2015-11-11 20:11 ` Brain fart alert Arnaldo Carvalho de Melo
[not found] ` <20151111201151.GA6712-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-11 21:05 ` David Sterba
[not found] ` <20151111210519.GG6445-AlSwsSmVLrQ@public.gmane.org>
2015-11-11 22:13 ` Arnaldo Carvalho de Melo
[not found] ` <20151111221340.GB12579-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-11 22:17 ` Arnaldo Carvalho de Melo
[not found] ` <20151111221747.GC12579-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-11 22:48 ` Arnaldo Carvalho de Melo
-- strict thread matches above, loose matches on Subject: below --
2012-07-21 18:22 Nicolas
[not found] ` <CACHCVZ6oDyFwGbC4EwF_wsR9tCkoych5N6buLhRRLcyaL6iifw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-08-15 17:56 ` Arnaldo Carvalho de Melo
[not found] ` <20120815175647.GK2370-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2012-08-16 19:52 ` Arnaldo Carvalho de Melo
[not found] ` <20120816195224.GC10277-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2012-08-19 22:16 ` Mark Wielaard
2012-08-20 13:45 ` Dodji Seketeli
[not found] ` <m3obm5fzhs.fsf-fIDRvF7C5exg9hUCZPvPmw@public.gmane.org>
2012-08-20 17:35 ` Arnaldo Carvalho de Melo
2012-08-20 18:02 ` Arnaldo Carvalho de Melo
[not found] ` <20120820180216.GE3046-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2012-08-20 18:28 ` Arnaldo Carvalho de Melo
2012-08-30 16:35 ` Nicolas
[not found] ` <CACHCVZ5EJadxOTJ0T4phSfAcm1FK7wfeDTp9QcSa1V1JCpa8SA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-09-03 12:22 ` Mark Wielaard
[not found] ` <1346674948.3090.40.camel-OO0OHOuVXW89n/EXqpbZ8ns8WZQLr0HW@public.gmane.org>
2012-09-24 22:19 ` Nicolas
[not found] ` <5060DC56.4080609-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-02-26 1:50 ` Nicolas
[not found] ` <CACHCVZ6uvDW1CpyxXio3P17EL6bE=FKGDNm11RNZTceR-dWLjg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-02-26 10:56 ` Mark Wielaard
[not found] ` <1361876163.4930.4.camel-Et2QWsRS+g7yukXOleVwRPp4M6BF03vq@public.gmane.org>
2013-03-20 13:37 ` Arnaldo Carvalho de Melo
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