David Sterba c08782dacd btrfs: fix structs where bitfields and spinlock/atomic share 8B word ...

On ia64, powerpc64 and sparc64 the bitfield is modified through a RMW cycle and current
gcc rewrites the adjacent 4B word, which in case of a spinlock or atomic has
disaterous effect.

https://lkml.org/lkml/2012/2/1/220

Signed-off-by: David Sterba <dsterba@suse.cz>

2012-02-15 16:40:25 +01:00

1.8 KiB

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