I am not sure what kinds of IO and wait methods are available on uClinux, but by looking at the code in tlibio.h, the following method seems not supported there. So whenever LIO_IO_SYNCP was chosen as the random IO method, it will skip the above code and failback to "No I/O method chosen". Can you try the following patch to see if it fixes the problem? It drops LIO_IO_SYNCP as an avaliable method for uClinux, and also narrows down the wait methods since it does not support async IO there. I'd hope someone knew better than me about uClinux to review this patch. Signed-off-by: CAI Qian <caiqian@cclom.cn>.
1 file changed