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Linux: enable direct IO for verify

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Linux has huge buffer cache (all free memory)
So make sure we are reading data back from the actual card instead
of cache.
This commit is contained in:
Floris Bos 2020-05-23 21:40:52 +02:00
parent eef90c2adb
commit b08ed20e5f
1 changed files with 5 additions and 0 deletions
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5
downloadthread.cpp
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@ -603,6 +603,11 @@ bool DownloadThread::_verify()
QElapsedTimer t1; QElapsedTimer t1;
t1.start(); t1.start();
#ifdef Q_OS_LINUX
/* Make sure we are reading from the drive and not from cache */
fcntl(_file.handle(), F_SETFL, O_DIRECT | fcntl(_file.handle(), F_GETFL));
#endif
if (!_firstBlock) if (!_firstBlock)
{ {
_file.seek(0); _file.seek(0);