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authorLuis Chamberlain <mcgrof@kernel.org>2020-06-08 21:35:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-09 09:39:16 -0700
commit4fa7252338a56fbc90220e6330f136a379175a7a (patch)
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parent2a71e81d32198785387c8bc0f2cc5d78f84e2e78 (diff)
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include/linux/cache.h: expand documentation over __read_mostly
__read_mostly can easily be misused by folks, its not meant for just read-only data. There are performance reasons for using it, but we also don't provide any guidance about its use. Provide a bit more guidance over its use. Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Christoph Lameter <cl@linux.com> Acked-by: Rafael Aquini <aquini@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Matthew Wilcox <willy@infradead.org> Link: http://lkml.kernel.org/r/20200507161424.2584-1-mcgrof@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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