diff options
| -rw-r--r-- | fs/proc/kcore.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index 3070cf3e2f5c..1cb33771bf9f 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -69,7 +69,7 @@ static int kcore_nphdr; static size_t kcore_phdrs_len; static size_t kcore_notes_len; static size_t kcore_data_offset; -static DECLARE_RWSEM(kclist_lock); +DEFINE_STATIC_PERCPU_RWSEM(kclist_lock); static int kcore_need_update = 1; /* @@ -276,7 +276,7 @@ static int kcore_update_ram(void) struct kcore_list *tmp, *pos; int ret = 0; - down_write(&kclist_lock); + percpu_down_write(&kclist_lock); if (!xchg(&kcore_need_update, 0)) goto out; @@ -297,7 +297,7 @@ static int kcore_update_ram(void) update_kcore_size(); out: - up_write(&kclist_lock); + percpu_up_write(&kclist_lock); list_for_each_entry_safe(pos, tmp, &garbage, list) { list_del(&pos->list); kfree(pos); @@ -335,7 +335,7 @@ static ssize_t read_kcore_iter(struct kiocb *iocb, struct iov_iter *iter) size_t orig_buflen = buflen; int ret = 0; - down_read(&kclist_lock); + percpu_down_read(&kclist_lock); /* * Don't race against drivers that set PageOffline() and expect no * further page access. @@ -626,7 +626,7 @@ skip: out: page_offline_thaw(); - up_read(&kclist_lock); + percpu_up_read(&kclist_lock); if (ret) return ret; return orig_buflen - buflen; |