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authorIngo Molnar <mingo@elte.hu>2006-07-03 00:25:33 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-03 15:27:10 -0700
commit663d440eaa496db903cc58be04b9b602ba45e43b (patch)
tree8af6967e175693f1c163a106a1d84be7a1bd0bfc /net/8021q/vlan.c
parent2b2d5493e10051694ae3a57ea6a153e3cb4d4488 (diff)
[PATCH] lockdep: annotate blkdev nesting
Teach special (recursive) locking code to the lock validator. Effects on non-lockdep kernels: - the introduction of the following function variants: extern struct block_device *open_partition_by_devnum(dev_t, unsigned); extern int blkdev_put_partition(struct block_device *); static int blkdev_get_whole(struct block_device *bdev, mode_t mode, unsigned flags); which on non-lockdep are the same as open_by_devnum(), blkdev_put() and blkdev_get(). - a subclass parameter to do_open(). [unused on non-lockdep] - a subclass parameter to __blkdev_put(), which is a new internal function for the main blkdev_put*() functions. [parameter unused on non-lockdep kernels, except for two sanity check WARN_ON()s] these functions carry no semantical difference - they only express object dependencies towards the lockdep subsystem. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'net/8021q/vlan.c')
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