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| author |   Nick Piggin <npiggin@kernel.dk> | 2011-01-14 02:36:43 +0000 |
|---|---|---|
| committer |   Nick Piggin <npiggin@hera.kernel.org> | 2011-01-14 02:36:43 +0000 |
| commit | 2c6755988afc003a0332406a134fb6a1626f9b28 (patch) | |
| tree | 84eea829cab7b28585000f6fd7fe0dc176b746c5 /include/linux/gpio.h | |
| parent | fs: fix dropping of rcu-walk from force_reval_path (diff) | |
| download | wireguard-linux-2c6755988afc003a0332406a134fb6a1626f9b28.tar.xz wireguard-linux-2c6755988afc003a0332406a134fb6a1626f9b28.zip | |
fs: hlist UP debug fixup
Po-Yu Chuang <ratbert.chuang@gmail.com> noticed that hlist_bl_set_first could
crash on a UP system when LIST_BL_LOCKMASK is 0, because
LIST_BL_BUG_ON(!((unsigned long)h->first & LIST_BL_LOCKMASK));
always evaulates to true.
Fix the expression, and also avoid a dependency between bit spinlock
implementation and list bl code (list code shouldn't know anything
except that bit 0 is set when adding and removing elements). Eventually
if a good use case comes up, we might use this list to store 1 or more
arbitrary bits of data, so it really shouldn't be tied to locking either,
but for now they are helpful for debugging.
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'include/linux/gpio.h')
0 files changed, 0 insertions, 0 deletions