redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

staging/lustre/ldlm: Remove ldlm_glimpse_ast() 

Only used on the server.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Oleg Drokin 2015-10-01 00:12:26 -04:00 committed by Greg Kroah-Hartman
parent 38c3f17fca
commit e306fc7917
2 changed files with 0 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/staging/lustre/lustre/include/lustre_dlm.h
View File

@ -1282,7 +1282,6 @@ int ldlm_expired_completion_wait(void *data);
int ldlm_blocking_ast_nocheck(struct ldlm_lock *lock);
int ldlm_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
void *data, int flag);
int ldlm_glimpse_ast(struct ldlm_lock *lock, void *reqp);
int ldlm_completion_ast_async(struct ldlm_lock *lock, __u64 flags, void *data);
int ldlm_completion_ast(struct ldlm_lock *lock, __u64 flags, void *data);
/** @} ldlm_local_ast */

28
drivers/staging/lustre/lustre/ldlm/ldlm_request.c
View File

@ -358,34 +358,6 @@ int ldlm_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
}
EXPORT_SYMBOL(ldlm_blocking_ast);
/**
* ->l_glimpse_ast() for DLM extent locks acquired on the server-side. See
* comment in filter_intent_policy() on why you may need this.
*/
int ldlm_glimpse_ast(struct ldlm_lock *lock, void *reqp)
{
/*
* Returning -ELDLM_NO_LOCK_DATA actually works, but the reason for
* that is rather subtle: with OST-side locking, it may so happen that
* _all_ extent locks are held by the OST. If client wants to obtain
* current file size it calls ll{,u}_glimpse_size(), and (as locks are
* on the server), dummy glimpse callback fires and does
* nothing. Client still receives correct file size due to the
* following fragment in filter_intent_policy():
*
* rc = l->l_glimpse_ast(l, NULL); // this will update the LVB
* if (rc != 0 && res->lr_namespace->ns_lvbo &&
* res->lr_namespace->ns_lvbo->lvbo_update) {
* res->lr_namespace->ns_lvbo->lvbo_update(res, NULL, 0, 1);
* }
*
* that is, after glimpse_ast() fails, filter_lvbo_update() runs, and
* returns correct file size to the client.
*/
return -ELDLM_NO_LOCK_DATA;
}
EXPORT_SYMBOL(ldlm_glimpse_ast);
static void failed_lock_cleanup(struct ldlm_namespace *ns,
struct ldlm_lock *lock, int mode)
{