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FS-Cache: fscache_object_is_dead() has wrong logic, kill it 

fscache_object_is_dead() returns true only if the object is marked dead and
the cache got an I/O error.  This should be a logical OR instead.  Since two
of the callers got split up into handling for separate subcases, expand the
other callers and kill the function.  This is probably the right thing to do
anyway since one of the subcases isn't about the object at all, but rather
about the cache.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Steve Dickson <steved@redhat.com>
Acked-by: Jeff Layton <jeff.layton@primarydata.com>
This commit is contained in:
David Howells 2015-02-24 10:52:51 +00:00
parent f09b443d0e
commit 8702152630
3 changed files with 6 additions and 9 deletions
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3
fs/fscache/cookie.c
View File

@ -327,7 +327,8 @@ static int fscache_alloc_object(struct fscache_cache *cache,
object_already_extant:
ret = -ENOBUFS;
if (fscache_object_is_dead(object)) {
if (fscache_object_is_dying(object) ||
fscache_cache_is_broken(object)) {
spin_unlock(&cookie->lock);
goto error;
}

6
fs/fscache/page.c
View File

@ -377,11 +377,13 @@ check_if_dead:
_leave(" = -ENOBUFS [cancelled]");
return -ENOBUFS;
}
if (unlikely(fscache_object_is_dead(object))) {
pr_err("%s() = -ENOBUFS [obj dead %d]\n", __func__, op->state);
if (unlikely(fscache_object_is_dying(object) ||
fscache_cache_is_broken(object))) {
enum fscache_operation_state state = op->state;
fscache_cancel_op(op, do_cancel);
if (stat_object_dead)
fscache_stat(stat_object_dead);
_leave(" = -ENOBUFS [obj dead %d]", state);
return -ENOBUFS;
}
return 0;

6
include/linux/fscache-cache.h
View File

@ -423,12 +423,6 @@ static inline bool fscache_object_is_active(struct fscache_object *object)
!fscache_cache_is_broken(object);
}
static inline bool fscache_object_is_dead(struct fscache_object *object)
{
return fscache_object_is_dying(object) &&
fscache_cache_is_broken(object);
}
/**
* fscache_object_destroyed - Note destruction of an object in a cache
* @cache: The cache from which the object came