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[JFFS2] Fix race in garbage collector

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Fix the race problem described here:
http://lists.infradead.org/pipermail/linux-mtd/2005-April/012361.html

Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Artem B. Bityuckiy
2005-04-09 11:47:03 +01:00
committed by Thomas Gleixner
parent abc37e6771
commit 8557fd51c2
2 changed files with 37 additions and 7 deletions
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14
fs/jffs2/nodelist.h
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@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
* $Id: nodelist.h,v 1.128 2005/02/27 23:01:32 dwmw2 Exp $
* $Id: nodelist.h,v 1.130 2005/04/09 10:46:59 dedekind Exp $
*
*/
@ -363,6 +363,18 @@ static inline struct jffs2_node_frag *frag_first(struct rb_root *root)
node = node->rb_left;
return rb_entry(node, struct jffs2_node_frag, rb);
}
static inline struct jffs2_node_frag *frag_last(struct rb_root *root)
{
struct rb_node *node = root->rb_node;
if (!node)
return NULL;
while(node->rb_right)
node = node->rb_right;
return rb_entry(node, struct jffs2_node_frag, rb);
}
#define rb_parent(rb) ((rb)->rb_parent)
#define frag_next(frag) rb_entry(rb_next(&(frag)->rb), struct jffs2_node_frag, rb)
#define frag_prev(frag) rb_entry(rb_prev(&(frag)->rb), struct jffs2_node_frag, rb)