From dee7121e8c0a3ce41af2b02d516f54eaec32abcd Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Tue, 18 Oct 2022 13:29:50 -0700 Subject: scsi: core: Change the return type of .eh_timed_out() Commit 6600593cbd93 ("block: rename BLK_EH_NOT_HANDLED to BLK_EH_DONE") made it impossible for .eh_timed_out() implementations to call scsi_done() without causing a crash. Restore support for SCSI timeout handlers to call scsi_done() as follows: * Change all .eh_timed_out() handlers as follows: - Change the return type into enum scsi_timeout_action. - Change BLK_EH_RESET_TIMER into SCSI_EH_RESET_TIMER. - Change BLK_EH_DONE into SCSI_EH_NOT_HANDLED. * In scsi_timeout(), convert the SCSI_EH_* values into BLK_EH_* values. Reviewed-by: Lee Duncan Cc: Christoph Hellwig Cc: Ming Lei Cc: John Garry Cc: Mike Christie Cc: Hannes Reinecke Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20221018202958.1902564-3-bvanassche@acm.org Reviewed-by: Mike Christie Signed-off-by: Martin K. Petersen --- Documentation/scsi/scsi_eh.rst | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'Documentation/scsi') diff --git a/Documentation/scsi/scsi_eh.rst b/Documentation/scsi/scsi_eh.rst index bad624fab823..104d09e9af09 100644 --- a/Documentation/scsi/scsi_eh.rst +++ b/Documentation/scsi/scsi_eh.rst @@ -92,14 +92,17 @@ The timeout handler is scsi_timeout(). When a timeout occurs, this function 1. invokes optional hostt->eh_timed_out() callback. Return value can be one of - - BLK_EH_RESET_TIMER + - SCSI_EH_RESET_TIMER This indicates that more time is required to finish the command. Timer is restarted. - - BLK_EH_DONE + - SCSI_EH_NOT_HANDLED eh_timed_out() callback did not handle the command. Step #2 is taken. + - SCSI_EH_DONE + eh_timed_out() completed the command. + 2. scsi_abort_command() is invoked to schedule an asynchronous abort which may issue a retry scmd->allowed + 1 times. Asynchronous aborts are not invoked for commands for which the SCSI_EH_ABORT_SCHEDULED flag is set (this -- cgit