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| author | Joel Stanley <joel@jms.id.au> | 2016-08-04 13:24:41 +0930 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2016-08-04 13:24:41 +0930 |
| commit | b916113d820adc856aad6b8ebc1a25403ff7f293 (patch) | |
| tree | abddf239d912c4868faf9fbc69c67d980f74c7df /Documentation/scsi/scsi_eh.txt | |
| parent | 2e4db6c6be91ade074c1a150a6db2aeb4920e25c (diff) | |
| parent | b05965f284db3e086022f4e318e46cb5bffb1376 (diff) | |
| download | talos-obmc-linux-0c987d13eea0df6c6632d592d404c985037a78cd.tar.gz talos-obmc-linux-0c987d13eea0df6c6632d592d404c985037a78cd.zip | |
Merge tag 'v4.4.16' into dev-4.4openbmc-4.4-20160804-1
This is the 4.4.16 stable release
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'Documentation/scsi/scsi_eh.txt')
| -rw-r--r-- | Documentation/scsi/scsi_eh.txt | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/scsi/scsi_eh.txt b/Documentation/scsi/scsi_eh.txt index 8638f61c8c9d..37eca00796ee 100644 --- a/Documentation/scsi/scsi_eh.txt +++ b/Documentation/scsi/scsi_eh.txt @@ -263,19 +263,23 @@ scmd->allowed. 3. scmd recovered ACTION: scsi_eh_finish_cmd() is invoked to EH-finish scmd - - shost->host_failed-- - clear scmd->eh_eflags - scsi_setup_cmd_retry() - move from local eh_work_q to local eh_done_q LOCKING: none + CONCURRENCY: at most one thread per separate eh_work_q to + keep queue manipulation lockless 4. EH completes ACTION: scsi_eh_flush_done_q() retries scmds or notifies upper - layer of failure. + layer of failure. May be called concurrently but must have + a no more than one thread per separate eh_work_q to + manipulate the queue locklessly - scmd is removed from eh_done_q and scmd->eh_entry is cleared - if retry is necessary, scmd is requeued using scsi_queue_insert() - otherwise, scsi_finish_command() is invoked for scmd + - zero shost->host_failed LOCKING: queue or finish function performs appropriate locking |
