Index: lib/jpegcontent.cpp
===================================================================
--- lib/jpegcontent.cpp
+++ lib/jpegcontent.cpp
@@ -113,7 +113,11 @@
     // performed a lossy image manipulation, mRawData is cleared and the image
     // pixels are kept in mImage until updateRawDataFromImage() is called.
     QImage mImage;
+
+    // mFile needs to be kept open, as it may be memory mapped and mRawData may point to it
+    QFile mFile;
     QByteArray mRawData;
+
     QSize mSize;
     QString mComment;
     bool mPendingTransformation;
@@ -205,12 +209,25 @@
 
 bool JpegContent::load(const QString& path)
 {
-    QFile file(path);
-    if (!file.open(QIODevice::ReadOnly)) {
+    d->mFile.setFileName(path);
+    if (!d->mFile.open(QIODevice::ReadOnly)) {
         qCritical() << "Could not open '" << path << "' for reading\n";
         return false;
     }
-    return loadFromData(file.readAll());
+
+    QByteArray rawData;
+    uchar* mappedFile = d->mFile.map(0, d->mFile.size(), QFileDevice::MapPrivateOption);
+    if(mappedFile == nullptr) {
+        // process' mapping limit exceeded, file is sealed or filesystem doesn't support it, etc.
+        qDebug() << "Could not mmap '" << path << "', falling back to QFile::readAll()\n";
+
+        rawData = file.readAll();
+    }
+    else {
+        rawData = QByteArray::fromRawData(reinterpret_cast<char*>(mappedFile), d->mFile.size());
+    }
+
+    return loadFromData(rawData);
 }
 
 bool JpegContent::loadFromData(const QByteArray& data)