From 09252e77ed13b1b412329825bad5797fbdd5a5c8 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 4 Dec 2006 15:40:51 +0100 Subject: [PATCH] [S390] Convert extmem spin_lock into a mutex. There's no need to have a spin_lock here, but need sleepable context for vmem_map. Therefore convert the spin_lock into a mutex. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/mm/extmem.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c index 375c2c4f6b77..9e9bc48463a5 100644 --- a/arch/s390/mm/extmem.c +++ b/arch/s390/mm/extmem.c @@ -78,7 +78,7 @@ struct dcss_segment { int segcnt; }; -static DEFINE_SPINLOCK(dcss_lock); +static DEFINE_MUTEX(dcss_lock); static struct list_head dcss_list = LIST_HEAD_INIT(dcss_list); static char *segtype_string[] = { "SW", "EW", "SR", "ER", "SN", "EN", "SC", "EW/EN-MIXED" }; @@ -114,7 +114,7 @@ segment_by_name (char *name) struct list_head *l; struct dcss_segment *tmp, *retval = NULL; - assert_spin_locked(&dcss_lock); + BUG_ON(!mutex_is_locked(&dcss_lock)); dcss_mkname (name, dcss_name); list_for_each (l, &dcss_list) { tmp = list_entry (l, struct dcss_segment, list); @@ -269,7 +269,7 @@ segment_overlaps_others (struct dcss_segment *seg) struct list_head *l; struct dcss_segment *tmp; - assert_spin_locked(&dcss_lock); + BUG_ON(!mutex_is_locked(&dcss_lock)); list_for_each(l, &dcss_list) { tmp = list_entry(l, struct dcss_segment, list); if ((tmp->start_addr >> 20) > (seg->end >> 20)) @@ -426,7 +426,7 @@ segment_load (char *name, int do_nonshared, unsigned long *addr, if (!MACHINE_IS_VM) return -ENOSYS; - spin_lock (&dcss_lock); + mutex_lock(&dcss_lock); seg = segment_by_name (name); if (seg == NULL) rc = __segment_load (name, do_nonshared, addr, end); @@ -441,7 +441,7 @@ segment_load (char *name, int do_nonshared, unsigned long *addr, rc = -EPERM; } } - spin_unlock (&dcss_lock); + mutex_unlock(&dcss_lock); return rc; } @@ -464,7 +464,7 @@ segment_modify_shared (char *name, int do_nonshared) unsigned long dummy; int dcss_command, rc, diag_cc; - spin_lock (&dcss_lock); + mutex_lock(&dcss_lock); seg = segment_by_name (name); if (seg == NULL) { rc = -EINVAL; @@ -505,7 +505,7 @@ segment_modify_shared (char *name, int do_nonshared) &dummy, &dummy); kfree(seg); out_unlock: - spin_unlock(&dcss_lock); + mutex_unlock(&dcss_lock); return rc; } @@ -523,7 +523,7 @@ segment_unload(char *name) if (!MACHINE_IS_VM) return; - spin_lock(&dcss_lock); + mutex_lock(&dcss_lock); seg = segment_by_name (name); if (seg == NULL) { PRINT_ERR ("could not find segment %s in segment_unload, " @@ -537,7 +537,7 @@ segment_unload(char *name) kfree(seg); } out_unlock: - spin_unlock(&dcss_lock); + mutex_unlock(&dcss_lock); } /* @@ -556,7 +556,7 @@ segment_save(char *name) if (!MACHINE_IS_VM) return; - spin_lock(&dcss_lock); + mutex_lock(&dcss_lock); seg = segment_by_name (name); if (seg == NULL) { @@ -589,7 +589,7 @@ segment_save(char *name) goto out; } out: - spin_unlock(&dcss_lock); + mutex_unlock(&dcss_lock); } EXPORT_SYMBOL(segment_load); -- 2.20.1