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Merge tag 'fscache-20130702' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull FS-Cache updates from David Howells:
"This contains a number of fixes for various FS-Cache issues plus some
cleanups. The commits are, in order:
1) Provide a system wait_on_atomic_t() and wake_up_atomic_t() sharing
the bit-wait table (enhancement for #8).
2) Don't put spin_lock() in a while-condition as spin_lock() may have
a do {} while(0) wrapper (cleanup).
3) Symbolically name i_mutex lock classes rather than using numbers
in CacheFiles (cleanup).
4) Don't sleep in page release if __GFP_FS is not set (deadlock vs
ext4).
5) Uninline fscache_object_init() (cleanup for #7).
6) Wrap checks on object state (cleanup for #7).
7) Simplify the object state machine by separating work states from
wait states.
8) Simplify cookie retention by objects (NULL pointer deref fix).
9) Remove unused list_to_page() macro (cleanup).
10) Make the remaining-pages counter in the retrieval op atomic
(assertion failure fix).
11) Don't use spin_is_locked() in assertions (assertion failure fix)"
* tag 'fscache-20130702' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
FS-Cache: Don't use spin_is_locked() in assertions
FS-Cache: The retrieval remaining-pages counter needs to be atomic_t
cachefiles: remove unused macro list_to_page()
FS-Cache: Simplify cookie retention for fscache_objects, fixing oops
FS-Cache: Fix object state machine to have separate work and wait states
FS-Cache: Wrap checks on object state
FS-Cache: Uninline fscache_object_init()
FS-Cache: Don't sleep in page release if __GFP_FS is not set
CacheFiles: name i_mutex lock class explicitly
fs/fscache: remove spin_lock() from the condition in while()
Add wait_on_atomic_t() and wake_up_atomic_t()
bcd7351e83