linux/fs/ocfs2/cluster
Christoph Hellwig 4246a0b63b block: add a bi_error field to struct bio
Currently we have two different ways to signal an I/O error on a BIO:

 (1) by clearing the BIO_UPTODATE flag
 (2) by returning a Linux errno value to the bi_end_io callback

The first one has the drawback of only communicating a single possible
error (-EIO), and the second one has the drawback of not beeing persistent
when bios are queued up, and are not passed along from child to parent
bio in the ever more popular chaining scenario.  Having both mechanisms
available has the additional drawback of utterly confusing driver authors
and introducing bugs where various I/O submitters only deal with one of
them, and the others have to add boilerplate code to deal with both kinds
of error returns.

So add a new bi_error field to store an errno value directly in struct
bio and remove the existing mechanisms to clean all this up.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-07-29 08:55:15 -06:00
..
Makefile ocfs2: remove versioning information 2014-01-21 16:19:41 -08:00
heartbeat.c block: add a bi_error field to struct bio 2015-07-29 08:55:15 -06:00
heartbeat.h ocfs2: fix deadlock between o2hb thread and o2net_wq 2014-10-09 22:25:47 -04:00
masklog.c ocfs2: remove __mlog_cpu_guess 2015-06-24 17:49:39 -07:00
masklog.h ocfs2: reduce object size of mlog uses 2015-06-24 17:49:39 -07:00
netdebug.c fs/ocfs2/cluster/netdebug.c: use seq_open_private() not seq_open() 2014-10-09 22:25:47 -04:00
nodemanager.c ocfs2: remove versioning information 2014-01-21 16:19:41 -08:00
nodemanager.h ocfs2/cluster: Make fence method configurable - v2 2009-12-02 16:49:26 -08:00
ocfs2_heartbeat.h ocfs2: warn the user on a dead timeout mismatch 2006-06-29 15:45:35 -07:00
ocfs2_nodemanager.h ocfs2/dlm: Add message DLM_QUERY_REGION 2010-10-09 10:26:23 -07:00
quorum.c ocfs2: quorum: add a log for node not fenced 2014-08-29 16:28:17 -07:00
quorum.h
sys.c VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms. 2014-03-24 12:21:00 +10:30
sys.h
tcp.c ocfs2: o2net: should remove debugfs in o2net_init() out branch 2015-06-24 17:49:39 -07:00
tcp.h ocfs2: o2net: set tcp user timeout to max value 2014-08-29 16:28:16 -07:00
tcp_internal.h ocfs2: fix wrong comment 2015-02-10 14:30:28 -08:00