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authorDavid Woodhouse <David.Woodhouse@intel.com>2010-05-19 17:00:10 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2010-05-19 17:10:22 +0100
commitacb64a43e4503fbea9faf123f2403da7af8831eb (patch)
tree862d5ad6530b7c8671bda96a1bd1d07179f0b7c9 /fs/jffs2
parentd6ce171069635f05737935adc813b4d48d71a583 (diff)
downloadop-kernel-dev-acb64a43e4503fbea9faf123f2403da7af8831eb.zip
op-kernel-dev-acb64a43e4503fbea9faf123f2403da7af8831eb.tar.gz
jffs2: Require jffs2_garbage_collect_trigger() to be called with lock held
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>
Diffstat (limited to 'fs/jffs2')
-rw-r--r--fs/jffs2/background.c3
-rw-r--r--fs/jffs2/nodemgmt.c2
-rw-r--r--fs/jffs2/super.c2
3 files changed, 5 insertions, 2 deletions
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 3ff50da..55f1dde 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -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 */
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 5ab5c85..dd2d920 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -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);
}
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 9a80e8e..12cc967 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -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);
}
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