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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-08-17 19:17:49 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-09-06 10:24:43 +0300 |
| commit | f28a4b4ddf8e7181c6c0bc45603d65c4ab6b14f9 (patch) | |
| tree | ac57ff2985e8915e5cc54666bf6b400f3d5db587 /arch/s390/mm/gmap.c | |
| parent | 60f07c8ec5fae06c23e9fd7bab67dabce92b3414 (diff) | |
| download | linux-f28a4b4ddf8e7181c6c0bc45603d65c4ab6b14f9.tar.xz | |
s390/mm: use a single lock for the fields in mm_context_t
The three locks 'lock', 'pgtable_lock' and 'gmap_lock' in the
mm_context_t can be reduced to a single lock.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/gmap.c')
| -rw-r--r-- | arch/s390/mm/gmap.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c index 9e1494e3d849..2f66290c9b92 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -100,14 +100,14 @@ struct gmap *gmap_create(struct mm_struct *mm, unsigned long limit) if (!gmap) return NULL; gmap->mm = mm; - spin_lock(&mm->context.gmap_lock); + spin_lock(&mm->context.lock); list_add_rcu(&gmap->list, &mm->context.gmap_list); if (list_is_singular(&mm->context.gmap_list)) gmap_asce = gmap->asce; else gmap_asce = -1UL; WRITE_ONCE(mm->context.gmap_asce, gmap_asce); - spin_unlock(&mm->context.gmap_lock); + spin_unlock(&mm->context.lock); return gmap; } EXPORT_SYMBOL_GPL(gmap_create); @@ -248,7 +248,7 @@ void gmap_remove(struct gmap *gmap) spin_unlock(&gmap->shadow_lock); } /* Remove gmap from the pre-mm list */ - spin_lock(&gmap->mm->context.gmap_lock); + spin_lock(&gmap->mm->context.lock); list_del_rcu(&gmap->list); if (list_empty(&gmap->mm->context.gmap_list)) gmap_asce = 0; @@ -258,7 +258,7 @@ void gmap_remove(struct gmap *gmap) else gmap_asce = -1UL; WRITE_ONCE(gmap->mm->context.gmap_asce, gmap_asce); - spin_unlock(&gmap->mm->context.gmap_lock); + spin_unlock(&gmap->mm->context.lock); synchronize_rcu(); /* Put reference */ gmap_put(gmap); |