Messages in this thread | | | Date | Tue, 29 May 2007 11:00:41 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] FILESYSTEMS: Delete unused "int dummy[5]" from inodes_stat_t. |
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On Tue, 29 May 2007 13:11:07 -0400 (EDT) "Robert P. J. Day" <rpjday@mindspring.com> wrote:
> > Delete the apparently unused array "int dummy[5]" from struct > inodes_stat_t. > > Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> > > --- > > no idea what that array is for, but no one seems to care about it. > removal compile-tested on x86 with "make allyesconfig" and nobody > misses it (unless it's used for padding of some kind). > > > diff --git a/include/linux/fs.h b/include/linux/fs.h > index 7cf0c54..dec83dd 100644 > --- a/include/linux/fs.h > +++ b/include/linux/fs.h > @@ -44,7 +44,6 @@ extern int get_max_files(void); > struct inodes_stat_t { > int nr_inodes; > int nr_unused; > - int dummy[5]; > }; > extern struct inodes_stat_t inodes_stat; >
kernel/sysctl.c:
{ .ctl_name = FS_STATINODE, .procname = "inode-state", .data = &inodes_stat, .maxlen = 7*sizeof(int), .mode = 0444, .proc_handler = &proc_dointvec, },
akpm:/home/akpm> cat /proc/sys/fs/inode-state 608039 178454 0 0 0 0 0
So it _is_ used: to present those five zeroes. I think this is for back-compatibility with some cretaceous-era kernel.
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