On 1.12.2015 13:39, Raghava Aditya Renukunta wrote: > From: Raghava Aditya Renukunta <raghavaaditya.renukunta@xxxxxxxx> > > The driver utilizes an array of atomic variables to keep track of > IO submissions to each vector. To submit an IO multiple threads > iterate through the array to find a vector which has empty slots > to send an IO. The reading and updating of the variable is not atomic, > causing race conditions when a thread uses a full vector to > submit an IO. > > Fixed by mapping each FIB to a vector, the submission path then uses > said vector to submit IO thereby removing the possibly of a race > condition.The vector assignment is started from 1 since vector 0 is > reserved for the use of AIF management FIBS.If the number of MSIx > vectors is 1 (MSI or INTx mode) then all the fibs are allocated to > vector 0. > > Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@xxxxxxxx> Reviewed-by: Tomas Henzl <thenzl@xxxxxxxxxx> Tomas -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
