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ipc_lock(9) [centos man page]

IPC_LOCK(9)						       Kernel IPC facilities						       IPC_LOCK(9)

ipc_lock - Lock an ipc structure without rwsem held SYNOPSIS
struct kern_ipc_perm * ipc_lock(struct ipc_ids * ids, int id); ARGUMENTS
ids IPC identifier set id ipc id to look for DESCRIPTION
Look for an id in the ipc ids idr and lock the associated ipc object. The ipc object is locked on successful exit. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 IPC_LOCK(9)
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