linux-stable

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History

David Howells 6897e3df8f FS-Cache: The object-available state can't rely on the cookie to be available

The object-available state in the object processing state machine (as
processed by fscache_object_available()) can't rely on the cookie to be
available because the FSCACHE_COOKIE_CREATING bit may have been cleared by
fscache_obtained_object() prior to the object being put into the
FSCACHE_OBJECT_AVAILABLE state.

Clearing the FSCACHE_COOKIE_CREATING bit on a cookie permits
__fscache_relinquish_cookie() to proceed and detach the cookie from the
object.

To deal with this, we don't dereference object->cookie in
fscache_object_available() if the object has already been detached.

In addition, a couple of assertions are added into fscache_drop_object() to
make sure the object is unbound from the cookie before it gets there.

Signed-off-by: David Howells <dhowells@redhat.com>

2009-11-19 18:11:22 +00:00

cache.c

FS-Cache: Add counters for entry/exit to/from cache operation functions

2009-11-19 18:11:08 +00:00

cookie.c

FS-Cache: Use radix tree preload correctly in tracking of pages to be stored

2009-11-19 18:11:14 +00:00

fsdef.c

FS-Cache: Root index definition

2009-04-03 16:42:37 +01:00

histogram.c

FS-Cache: Add use of /proc and presentation of statistics