[Xen-changelog] [xen master] tmem: Add ASSERT in obj_rb_insert for pool->rwlock lock.

[patchbot@xxxxxxx]

commit 7646da32f6a863b4c9c7ec9a7226bf675921622e
Author:     Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
AuthorDate: Fri Aug 21 10:49:22 2015 -0400
Commit:     Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
CommitDate: Wed Sep 2 08:47:59 2015 -0400

    tmem: Add ASSERT in obj_rb_insert for pool->rwlock lock.
    
    Manipulating the obj-> structures requires us to hold the
    pool->rwlock lock. Lets make that obvious in this function to
    catch any errant users (none found, but we may in future).
    
    Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 xen/common/tmem.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/xen/common/tmem.c b/xen/common/tmem.c
index ed9b975..6ea602b 100644
--- a/xen/common/tmem.c
+++ b/xen/common/tmem.c
@@ -916,6 +916,9 @@ static int obj_rb_insert(struct rb_root *root, struct 
tmem_object_root *obj)
     struct rb_node **new, *parent = NULL;
     struct tmem_object_root *this;
 
+    ASSERT(obj->pool);
+    ASSERT_WRITELOCK(&obj->pool->pool_rwlock);
+
     new = &(root->rb_node);
     while ( *new )
     {
--
generated by git-patchbot for /home/xen/git/xen.git#master

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