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Open Source and information security mailing list archives
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Date: Tue, 08 Sep 2009 17:51:19 -0500 From: Matt Mackall <mpm@...enic.com> To: Hugh Dickins <hugh.dickins@...cali.co.uk> Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org Subject: Re: [PATCH] tmpfs: depend on shmem On Tue, 2009-09-08 at 21:25 +0100, Hugh Dickins wrote: > CONFIG_SHMEM off gives you (ramfs masquerading as) tmpfs, even when > CONFIG_TMPFS is off: that's a little anomalous, and I'd intended to > make more sense of it by removing CONFIG_TMPFS altogether, always > enabling its code when CONFIG_SHMEM; but so many defconfigs have > CONFIG_SHMEM on CONFIG_TMPFS off that we'd better leave that as is. > > But there is no point in asking for CONFIG_TMPFS if CONFIG_SHMEM is > off: make TMPFS depend on SHMEM, which also prevents TMPFS_POSIX_ACL > shmem_acl.o being pointlessly built into the kernel when SHMEM is off. Fair enough. > And a selfish change, to prevent the world from being rebuilt when I > switch between CONFIG_SHMEM on and off: the only CONFIG_SHMEM in the > header files is mm.h shmem_lock() - give that a shmem.c stub instead. Might as well, on the principle of one less ifdef. > Signed-off-by: Hugh Dickins <hugh.dickins@...cali.co.uk> Acked-by: Matt Mackall <mpm@...enic.com> -- http://selenic.com : development and support for Mercurial and Linux -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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