tree 49cc3c01fe006e85917714a0ba2202293309a645
parent 8e3f715a7f004ceb6451cf86101d6e2546eea883
author Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> 1192602568 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1192635776 -0700

local_t Documentation update 2

Grant Grundler was asking for more detail about correct usage of local
atomic operations and suggested adding the resulting summary to
local_ops.txt.

"Please add a bit more detail.  If DaveM is correct (he normally is), then
there must be limits on how the local_t can be used in the kernel process
and interrupt contexts.  I'd like those rules spelled out very clearly
since it's easy to get wrong and tracking down such a bug is quite
painful."

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>