Kernel: Remove tracking of bitmap memory.

There are no more kernel bitmaps. It's much better this way.

Kernel/ProcFS.cpp

@@ -505,7 +505,7 @@ ByteBuffer procfs$all(InodeIdentifier)
     auto processes = Process::all_processes();
     StringBuilder builder;
     auto build_process_line = [&builder] (Process* process) {
-        builder.appendf("%u,%u,%u,%u,%u,%u,%u,%s,%u,%u,%s,%s,%u,%u,%u,%u,%u,%s\n",
+        builder.appendf("%u,%u,%u,%u,%u,%u,%u,%s,%u,%u,%s,%s,%u,%u,%u,%u,%s\n",
             process->pid(),
             process->times_scheduled(),
             process->tty() ? process->tty()->pgid() : 0,
@@ -521,7 +521,6 @@ ByteBuffer procfs$all(InodeIdentifier)
             process->amount_virtual(),
             process->amount_resident(),
             process->amount_shared(),
-            process->amount_in_bitmaps(),
             process->ticks(),
             to_string(process->priority())
         );

Kernel/Process.cpp

@@ -2168,16 +2168,6 @@ size_t Process::amount_virtual() const
     return amount;
 }
 
-size_t Process::amount_in_bitmaps() const
-{
-    size_t amount = 0;
-    for (auto& region : m_regions) {
-        if (region->is_bitmap())
-            amount += region->size();
-    }
-    return amount;
-}
-
 size_t Process::amount_resident() const
 {
     // FIXME: This will double count if multiple regions use the same physical page.

Kernel/Process.h

@@ -277,7 +277,6 @@ public:
     size_t amount_virtual() const;
     size_t amount_resident() const;
     size_t amount_shared() const;
-    size_t amount_in_bitmaps() const;
 
     Process* fork(RegisterDump&);
     int exec(const String& path, Vector<String>&& arguments, Vector<String>&& environment);

Userland/top.cpp

@@ -18,7 +18,6 @@ struct Process {
     String priority;
     unsigned linear;
     unsigned committed;
-    unsigned in_bitmaps;
     unsigned nsched_since_prev;
     unsigned cpu_percent;
     unsigned cpu_percent_decimal;
@@ -44,7 +43,7 @@ static Snapshot get_snapshot()
         if (!ptr)
             break;
         auto parts = String(buf, Chomp).split(',');
-        if (parts.size() < 18)
+        if (parts.size() < 17)
             break;
         bool ok;
         pid_t pid = parts[0].to_uint(ok);
@@ -58,15 +57,13 @@ static Snapshot get_snapshot()
         unsigned uid = parts[5].to_uint(ok);
         ASSERT(ok);
         process.user = s_usernames->get(uid);
-        process.priority = parts[17];
+        process.priority = parts[16];
         process.state = parts[7];
         process.name = parts[11];
         process.linear = parts[12].to_uint(ok);
         ASSERT(ok);
         process.committed = parts[13].to_uint(ok);
         ASSERT(ok);
-        process.in_bitmaps = parts[15].to_uint(ok);
-        ASSERT(ok);
         snapshot.map.set(pid, move(process));
     }
     int rc = fclose(fp);
@@ -90,14 +87,13 @@ int main(int, char**)
         auto sum_diff = current.sum_nsched - prev.sum_nsched;
 
         printf("\033[3J\033[H\033[2J");
-        printf("\033[47;30m%6s  %3s  % 8s  % 8s  %6s  %6s  %6s  %4s  %s\033[K\033[0m\n",
+        printf("\033[47;30m%6s  %3s  % 8s  % 8s  %6s  %6s  %4s  %s\033[K\033[0m\n",
                "PID",
                "PRI",
                "USER",
                "STATE",
                "LINEAR",
                "COMMIT",
-               "BITMAP",
                "%CPU",
                "NAME");
         for (auto& it : current.map) {
@@ -123,14 +119,13 @@ int main(int, char**)
         });
 
         for (auto* process : processes) {
-            printf("%6d  %c    % 8s  % 8s  %6u  %6u  %6u  %2u.%1u  %s\n",
+            printf("%6d  %c    % 8s  % 8s  %6u  %6u  %2u.%1u  %s\n",
                 process->pid,
                 process->priority[0],
                 process->user.characters(),
                 process->state.characters(),
                 process->linear / 1024,
                 process->committed / 1024,
-                process->in_bitmaps / 1024,
                 process->cpu_percent,
                 process->cpu_percent_decimal,
                 process->name.characters()