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dlm: convert res_lock to spinlock

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Convert the rsb struct res_lock from a mutex to a spinlock
in preparation for processing messages in softirq context.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
Alexander Aring 2024-04-02 15:18:05 -04:00 committed by David Teigland
parent 097691dbad
commit cc396e2355
3 changed files with 4 additions and 4 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

2
fs/dlm/dlm_internal.h
View file

@ -320,7 +320,7 @@ struct dlm_lkb {
struct dlm_rsb { struct dlm_rsb {
struct dlm_ls *res_ls; /* the lockspace */ struct dlm_ls *res_ls; /* the lockspace */
struct kref res_ref; struct kref res_ref;
struct mutex res_mutex; spinlock_t res_lock;
unsigned long res_flags; unsigned long res_flags;
int res_length; /* length of rsb name */ int res_length; /* length of rsb name */
int res_nodeid; int res_nodeid;

2
fs/dlm/lock.c
View file

@ -415,7 +415,7 @@ static int get_rsb_struct(struct dlm_ls *ls, const void *name, int len,
r->res_ls = ls; r->res_ls = ls;
r->res_length = len; r->res_length = len;
memcpy(r->res_name, name, len); memcpy(r->res_name, name, len);
mutex_init(&r->res_mutex); spin_lock_init(&r->res_lock);
INIT_LIST_HEAD(&r->res_lookup); INIT_LIST_HEAD(&r->res_lookup);
INIT_LIST_HEAD(&r->res_grantqueue); INIT_LIST_HEAD(&r->res_grantqueue);

4
fs/dlm/lock.h
View file

@ -69,12 +69,12 @@ static inline int is_master(struct dlm_rsb *r)
static inline void lock_rsb(struct dlm_rsb *r) static inline void lock_rsb(struct dlm_rsb *r)
{ {
mutex_lock(&r->res_mutex); spin_lock(&r->res_lock);
} }
static inline void unlock_rsb(struct dlm_rsb *r) static inline void unlock_rsb(struct dlm_rsb *r)
{ {
mutex_unlock(&r->res_mutex); spin_unlock(&r->res_lock);
} }
#endif #endif