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
Kconfig -rw-r--r-- 1.3 KB
Makefile -rw-r--r-- 285 bytes
awacs.c -rw-r--r-- 32.1 KB
awacs.h -rw-r--r-- 8.0 KB
beep.c -rw-r--r-- 7.8 KB
burgundy.c -rw-r--r-- 24.5 KB
burgundy.h -rw-r--r-- 4.0 KB
daca.c -rw-r--r-- 6.9 KB
keywest.c -rw-r--r-- 3.6 KB
pmac.c -rw-r--r-- 37.4 KB
pmac.h -rw-r--r-- 5.1 KB
powermac.c -rw-r--r-- 5.2 KB
snd_ps3.c -rw-r--r-- 28.7 KB
snd_ps3.h -rw-r--r-- 3.5 KB
snd_ps3_reg.h -rw-r--r-- 33.2 KB
tumbler.c -rw-r--r-- 38.2 KB
tumbler_volume.h -rw-r--r-- 6.5 KB

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