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lockd: Add refcounting to struct nlm_block

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Otherwise, the block may disappear from underneath us when in
nlmsvc_retry_blocked.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2006-03-20 13:44:39 -05:00
parent 09c7938c56
commit 6849c0cab6
2 changed files with 47 additions and 50 deletions
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3
include/linux/lockd/lockd.h
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@ -14,6 +14,7 @@
#include <linux/config.h>
#include <linux/in.h>
#include <linux/fs.h>
#include <linux/kref.h>
#include <linux/utsname.h>
#include <linux/nfsd/nfsfh.h>
#include <linux/lockd/bind.h>
@ -110,6 +111,7 @@ struct nlm_file {
*/
#define NLM_NEVER (~(unsigned long) 0)
struct nlm_block {
struct kref b_count; /* Reference count */
struct nlm_block * b_next; /* linked list (all blocks) */
struct nlm_block * b_fnext; /* linked list (per file) */
struct nlm_rqst b_call; /* RPC args & callback info */
@ -119,7 +121,6 @@ struct nlm_block {
unsigned int b_id; /* block id */
unsigned char b_queued; /* re-queued */
unsigned char b_granted; /* VFS granted lock */
unsigned char b_incall; /* doing callback */
unsigned char b_done; /* callback complete */
struct nlm_file * b_file; /* file in question */
};