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| author |   Luis Chamberlain <mcgrof@kernel.org> | 2020-06-08 21:35:07 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:39:16 -0700 |
| commit | 4fa7252338a56fbc90220e6330f136a379175a7a (patch) | |
| tree | 5061c6346a7723a4970f8d49f13dbf10fcb0087d /arch | |
| parent | maccess: return -ERANGE when probe_kernel_read() fails (diff) | |
| download | linux-dev-4fa7252338a56fbc90220e6330f136a379175a7a.tar.xz linux-dev-4fa7252338a56fbc90220e6330f136a379175a7a.zip | |
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>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions