[PATCH v2 4/9] proc/vmcore: let pfn_is_ram() return a bool

[David Hildenbrand <david@xxxxxxxxxx>]

The callback should deal with errors internally, it doesn't make sense to
expose these via pfn_is_ram(). We'll rework the callbacks next. Right now
we consider errors as if "it's RAM"; no functional change.

Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
---
 fs/proc/vmcore.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 9a15334da208..a9bd80ab670e 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -84,11 +84,11 @@ void unregister_oldmem_pfn_is_ram(void)
 }
 EXPORT_SYMBOL_GPL(unregister_oldmem_pfn_is_ram);
 
-static int pfn_is_ram(unsigned long pfn)
+static bool pfn_is_ram(unsigned long pfn)
 {
        int (*fn)(unsigned long pfn);
        /* pfn is ram unless fn() checks pagetype */
-       int ret = 1;
+       bool ret = true;
 
        /*
         * Ask hypervisor if the pfn is really ram.
@@ -97,7 +97,7 @@ static int pfn_is_ram(unsigned long pfn)
         */
        fn = oldmem_pfn_is_ram;
        if (fn)
-               ret = fn(pfn);
+               ret = !!fn(pfn);
 
        return ret;
 }
@@ -124,7 +124,7 @@ ssize_t read_from_oldmem(char *buf, size_t count,
                        nr_bytes = count;
 
                /* If pfn is not ram, return zeros for sparse dump files */
-               if (pfn_is_ram(pfn) == 0)
+               if (!pfn_is_ram(pfn))
                        memset(buf, 0, nr_bytes);
                else {
                        if (encrypted)
-- 
2.31.1