FS-Cache: refcount becomes corrupt under vma pressure.

[linux-2.6-block.git] / fs / fscache / page.c

diff --git a/fs/fscache/page.c b/fs/fscache/page.c
index 781ac7b0b53e71ea5339303960032df125ddaf37..de33b3fccca650da99ee850597d5aef437b3a6fe 100644 (file)
--- a/fs/fscache/page.c
+++ b/fs/fscache/page.c
@@ -198,7 +198,7 @@ int __fscache_attr_changed(struct fscache_cookie *cookie)
 {
        struct fscache_operation *op;
        struct fscache_object *object;
-       bool wake_cookie;
+       bool wake_cookie = false;
 
        _enter("%p", cookie);
 
@@ -228,15 +228,16 @@ int __fscache_attr_changed(struct fscache_cookie *cookie)
 
        __fscache_use_cookie(cookie);
        if (fscache_submit_exclusive_op(object, op) < 0)
-               goto nobufs;
+               goto nobufs_dec;
        spin_unlock(&cookie->lock);
        fscache_stat(&fscache_n_attr_changed_ok);
        fscache_put_operation(op);
        _leave(" = 0");
        return 0;
 
-nobufs:
+nobufs_dec:
        wake_cookie = __fscache_unuse_cookie(cookie);
+nobufs:
        spin_unlock(&cookie->lock);
        kfree(op);
        if (wake_cookie)