Documentation/sparse.txt: document context annotations for lock checking
The context feature of sparse is used with the Linux kernel sources to check for imbalanced uses of locks. Document the annotations defined in include/linux/compiler.h that tell sparse what to expect when a lock is held on function entry, exit, or both. Signed-off-by: NEd Cashin <ecashin@coraid.com> Reviewed-by: NJosh Triplett <josh@joshtriplett.org> Acked-by: NChristopher Li <sparse@chrisli.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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