path: root/ipc/sem.c
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authorAlexey Dobriyan <>2018-03-20 21:51:06 +0300
committerEric W. Biederman <>2018-03-21 09:40:17 -0500
commitdd206bec9a446884805370b1c16c1d7a97036777 (patch)
treeeaacdddc5f008401906b962ff1feb4a9cace9bfc /ipc/sem.c
parent91ab883eb21325ad80f3473633f794c78ac87f51 (diff)
pidns: simpler allocation of pid_* caches
Those pid_* caches are created on demand when a process advances to the new level of pid namespace. Which means pointers are stable, write only and thus can be packed into an array instead of spreading them over and using lists(!) to find them. Both first and subsequent clone/unshare(CLONE_NEWPID) become faster. Signed-off-by: Alexey Dobriyan <> Signed-off-by: Eric W. Biederman <>
Diffstat (limited to 'ipc/sem.c')
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