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[PATCH] fix of shmem oops [message #518]

Fri, 09 December 2005 10:44

dim
Messages: 344
Registered: August 2005

Senior Member

Patch from Dmitry (dim@):
- fixed race between dput_recursive and generic_shutdown_super on root
dentry.
Bug #55453

--
Thanks,
Dmitry.

--- ./fs/dcache.c.shrinkroot 2005-12-05 12:01:57.000000000 +0300
+++ ./fs/dcache.c 2005-12-08 15:33:44.000000000 +0300
@@ -129,14 +129,11 @@ DECLARE_WAIT_QUEUE_HEAD(dcache_shrinker_
static void dcache_shrinker_add(struct dcache_shrinker *ds,
struct dentry *parent, struct dentry *dentry)
{
- if (parent != dentry) {
- struct super_block *sb;
+ struct super_block *sb;

- sb = parent->d_sb;
- ds->dentry = parent;
- list_add(&ds->list, &sb->s_dshrinkers);
- } else
- INIT_LIST_HEAD(&ds->list);
+ sb = parent->d_sb;
+ ds->dentry = parent;
+ list_add(&ds->list, &sb->s_dshrinkers);
}

/* called under dcache_lock */