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authorMaria Matejka <mq@ucw.cz>2020-07-22 00:09:15 +0200
committerMaria Matejka <mq@ucw.cz>2021-03-25 16:47:48 +0100
commit886dd92eeefa070d8db6aaf0245a67f7a9e9b983 (patch)
tree67911e19951d083c003e212578fae76d93deb01c /lib/buffer_test.c
parent82f19ba95e421f00a8e99a866a2b8d9bbdba6cdc (diff)
Slab: head now uses bitmask for used/free nodes info instead of lists
From now, there are no auxiliary pointers stored in the free slab nodes. This led to strange debugging problems if use-after-free happened in slab-allocated structures, especially if the structure's first member is a next pointer. This also reduces the memory needed by 1 pointer per allocated object. OTOH, we now rely on pages being aligned to their size's multiple, which is quite common anyway.
Diffstat (limited to 'lib/buffer_test.c')
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