Revision a6a5349d17f2a5c37079826f1a1474c3d08c6b53 authored by Sage Weil on 13 April 2010, 21:07:07 UTC, committed by Sage Weil on 13 April 2010, 21:07:07 UTC
Use a separate class for ceph sockets to prevent lockdep confusion.
Because ceph sockets only get passed kernel pointers, there is no
dependency from sk_lock -> mmap_sem.  If we share the same class as other
sockets, lockdep detects a circular dependency from

	mmap_sem (page fault) -> fs mutex -> sk_lock -> mmap_sem

because dependencies are noted from both ceph and user contexts.  Using
a separate class prevents the sk_lock(ceph) -> mmap_sem dependency and
makes lockdep happy.

Signed-off-by: Sage Weil <sage@newdream.net>
1 parent e1e4dd0
History
File Mode Size
integrity
keys
selinux
smack
tomoyo
Kconfig -rw-r--r-- 6.2 KB
Makefile -rw-r--r-- 835 bytes
capability.c -rw-r--r-- 24.4 KB
commoncap.c -rw-r--r-- 26.6 KB
device_cgroup.c -rw-r--r-- 11.7 KB
inode.c -rw-r--r-- 8.7 KB
lsm_audit.c -rw-r--r-- 8.7 KB
min_addr.c -rw-r--r-- 1.3 KB
security.c -rw-r--r-- 33.5 KB

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