[SOLVED] [jasmine-o-oss] Large Data R/W Causing Hangs

[tytydraco]

Take a look at these three lines of Xiaomi's initial commit for Jasmine: https://github.com/MiCode/Xiaomi_Kernel_OpenSource/commit/91d64da2433390582cdbeb8e2ce9fae0e78eec78#diff-b335e0e983fcf2a9b8c6406e89148be5R118

Here's the snippet of code: drivers/mmc/card/queue.c

struct sched_param scheduler_params = {0};
scheduler_params.sched_priority = 1;
sched_setscheduler(current, SCHED_FIFO, &scheduler_params);

By setting the MMC driver's scheduler to FIFO and restricting it's priority to 1, large data transfers are held up, causing noticeable hangs. These hangs often require a hard reset when writing 300+ MB of data to the MMC storage device.

To solve this issue, simply remove these three lines of code, as they are detrimental to the performance of the device, severely limiting disk performance.

[ArneAmeye]

Have you tried making a pull request, maybe that will get the ball rolling?