On 4/14/21 8:16 PM, Damien Le Moal wrote: > The backend.c function switch_ioscheduler() suffers from several > problems: > 1) This function only considers the first file of a job. For jobs using > multiple files, the ioscheduler switch will done only for that file. > 2) If the job file is a character device, a pipe or a regular file for > which the hosting block device file cannot be determined (e.g. a > remote file), thring to switch the IO scheduler causes a crash as the > file disk_util field is NULL. > Fix both problems by introducing the helper function set_ioscheduler() > and changing switch_ioscheduler() to repeatdly call this helper for all > files of the job, ignoring character device files, pipe files and files > without a hosting device information. > > Also update the man page to better explain when the ioscheduler option > applies. Thanks! Applied. -- Jens Axboe
