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jffs2: Require jffs2_garbage_collect_trigger() to be called with lock held

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We're about to call this from a bunch of places which already hold
c->erase_completion_lock, so add an assertion and change its existing
callers to do the same.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2010-05-19 17:00:10 +01:00
parent d6ce171069
commit acb64a43e4
3 changed files with 5 additions and 2 deletions
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3
fs/jffs2/background.c
View File

@ -23,10 +23,9 @@ static int jffs2_garbage_collect_thread(void *);
void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c)
{
spin_lock(&c->erase_completion_lock);
assert_spin_locked(&c->erase_completion_lock);
if (c->gc_task && jffs2_thread_should_wake(c))
send_sig(SIGHUP, c->gc_task, 1);
spin_unlock(&c->erase_completion_lock);
}
/* This must only ever be called when no GC thread is currently running */

2
fs/jffs2/nodemgmt.c
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@ -481,7 +481,9 @@ struct jffs2_raw_node_ref *jffs2_add_physical_node_ref(struct jffs2_sb_info *c,
void jffs2_complete_reservation(struct jffs2_sb_info *c)
{
D1(printk(KERN_DEBUG "jffs2_complete_reservation()\n"));
spin_lock(&c->erase_completion_lock);
jffs2_garbage_collect_trigger(c);
spin_unlock(&c->erase_completion_lock);
mutex_unlock(&c->alloc_sem);
}

2
fs/jffs2/super.c
View File

@ -63,7 +63,9 @@ static void jffs2_write_super(struct super_block *sb)
if (!(sb->s_flags & MS_RDONLY)) {
D1(printk(KERN_DEBUG "jffs2_write_super()\n"));
spin_lock(&c->erase_completion_lock);
jffs2_garbage_collect_trigger(c);
spin_unlock(&c->erase_completion_lock);
jffs2_erase_pending_blocks(c, 0);
jffs2_flush_wbuf_gc(c, 0);
}