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4246a0b63b
linux/fs/nfs
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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
..
blocklayout block: add a bi_error field to struct bio 2015-07-29 08:55:15 -06:00
filelayout writeback: separate out include/linux/backing-dev-defs.h 2015-06-02 08:33:34 -06:00
flexfilelayout pNFS/flexfiles: Fix the reset of struct pgio_header when resending 2015-06-26 15:39:50 -04:00
objlayout NFSv4.1/pnfs: Separate out metadata and data consistency for pNFS 2015-03-27 12:39:38 -04:00
cache_lib.c NFS: simplify and clean cache library 2013-02-15 10:43:36 -05:00
cache_lib.h NFS: simplify and clean cache library 2013-02-15 10:43:36 -05:00
callback_proc.c NFS: Ensure that we update the sequence id under the slot table lock 2015-06-11 21:15:52 -04:00
callback_xdr.c NFS: Convert use of __constant_htonl to htonl 2015-06-10 18:57:59 -04:00
callback.c nfs: deny backchannel RPCs with an incorrect authflavor instead of dropping them 2015-06-11 14:06:34 -04:00
callback.h NFS: Add in v4.2 callback operation 2013-06-08 16:20:18 -04:00
client.c nfs: Use remove_proc_subtree() instead remove_proc_entry() 2015-07-01 11:29:41 -04:00
delegation.c Merge branch 'bugfixes' 2015-04-23 15:16:27 -04:00
delegation.h NFSv4: Fix races between nfs_remove_bad_delegation() and delegation return 2014-11-12 17:19:04 -05:00
dir.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-07-04 19:36:06 -07:00
direct.c NFS client updates for Linux 4.1 2015-04-26 17:33:59 -07:00
dns_resolve.c NFS: Enabling v4.2 should not recompile nfsd and lockd 2013-11-19 16:20:40 -05:00
dns_resolve.h
file.c sunrpc: keep a count of swapfiles associated with the rpc_clnt 2015-06-10 18:26:14 -04:00
fscache-index.c NFS: Fabricate fscache server index key correctly 2014-09-25 21:25:18 -04:00
fscache.c nfs: define nfs_inc_fscache_stats and using it as possible 2014-11-24 20:08:47 -05:00
fscache.h NFS: Use i_writecount to control whether to get an fscache cookie in nfs_open() 2013-09-27 18:40:25 +01:00
getroot.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
inode.c nfs: Remove unneeded micro checking of CONFIG_PROC_FS 2015-07-01 11:30:45 -04:00
internal.h writeback: move backing_dev_info->bdi_stat[] into bdi_writeback 2015-06-02 08:33:34 -06:00
iostat.h nfs: define nfs_inc_fscache_stats and using it as possible 2014-11-24 20:08:47 -05:00
Kconfig kernel: conditionally support non-root users, groups and capabilities 2015-04-15 16:35:22 -07:00
Makefile NFS: Rename idmap.c to nfs4idmap.c 2015-04-23 15:16:14 -04:00
mount_clnt.c nfs: have nfs_mount fake up a auth_flavs list when the server didn't provide it 2013-06-28 15:51:51 -04:00
namespace.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
netns.h pnfs/blocklayout: serialize GETDEVICEINFO calls 2014-11-12 14:22:52 -05:00
nfs2super.c
nfs2xdr.c nfs: save server READ/WRITE/COMMIT status 2015-02-03 11:06:40 -08:00
nfs3_fs.h nfsv3: introduce nfs3_set_ds_client 2015-02-03 11:06:34 -08:00
nfs3acl.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs3client.c nfs: set hostname when creating nfsv3 ds connection 2015-02-03 11:06:38 -08:00
nfs3proc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs3super.c nfsv3: introduce nfs3_set_ds_client 2015-02-03 11:06:34 -08:00
nfs3xdr.c NFS: Fix size of NFSACL SETACL operations 2015-06-02 08:55:28 -04:00
nfs4_fs.h NFSv.2/pnfs Add a LAYOUTSTATS rpc function 2015-06-24 10:17:37 -04:00
nfs4client.c nfs: Drop bad comment in nfs41_walk_client_list() 2015-07-01 11:30:59 -04:00
nfs4file.c nfs: verify open flags before allowing open 2015-06-25 19:38:00 -04:00
nfs4getroot.c nfs: Remove invalid NFS_ATTR_FATTR_V4_REFERRAL checking in nfs4_get_rootfh 2015-07-01 11:31:22 -04:00
nfs4idmap.c NFS: drop unneeded goto 2015-06-02 08:55:28 -04:00
nfs4idmap.h NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4namespace.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs4proc.c nfs4: have do_vfs_lock take an inode pointer 2015-07-13 06:29:11 -04:00
nfs4renewd.c NFSv4.1: Fix an NFSv4.1 state renewal regression 2014-09-30 17:18:42 -04:00
nfs4session.c NFSv4.1: Don't set up a backchannel if the server didn't agree to do so 2015-02-18 12:30:47 -08:00
nfs4session.h NFSv4.1: Clear the old state by our client id before establishing a new lease 2015-03-03 21:52:30 -05:00
nfs4state.c NFSv4: Always drain the slot table before re-establishing the lease 2015-06-02 08:55:27 -04:00
nfs4super.c NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4sysctl.c NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4trace.c NFSv4.1: Add tracepoints for debugging slot table operations 2013-08-22 08:58:27 -04:00
nfs4trace.h VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs4xdr.c NFSv.2/pnfs Add a LAYOUTSTATS rpc function 2015-06-24 10:17:37 -04:00
nfs42.h NFSv.2/pnfs Add a LAYOUTSTATS rpc function 2015-06-24 10:17:37 -04:00
nfs42proc.c NFSv4.2: LAYOUTSTATS is optional to implement 2015-06-27 11:48:58 -04:00
nfs42xdr.c NFSv4.2: Fix up a decoding error in layoutstats 2015-06-27 11:30:57 -04:00
nfs.h
nfsroot.c NFS: a couple off by ones 2015-01-30 20:43:30 -05:00
nfstrace.c NFSv4: Allow tracing of NFSv4 fsync calls 2015-03-27 12:39:34 -04:00
nfstrace.h NFS: fix the handling of NFS_INO_INVALID_DATA flag in nfs_revalidate_mapping 2014-01-27 15:35:56 -05:00
pagelist.c nfs: Remove invalid tk_pid from debug message 2015-07-01 11:31:25 -04:00
pnfs_dev.c NFSv4.1: Don't cache deviceids that have no notifications 2015-03-27 12:32:24 -04:00
pnfs_nfs.c Merge branch 'bugfixes' 2015-04-23 15:16:27 -04:00
pnfs.c NFSv4.2: LAYOUTSTATS is optional to implement 2015-06-27 11:48:58 -04:00
pnfs.h nfs: provide pnfs_report_layoutstat when NFS42 is disabled 2015-06-26 14:01:37 -04:00
proc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
read.c NFS client updates for Linux 4.1 2015-04-26 17:33:59 -07:00
super.c kernel/params: constify struct kernel_param_ops uses 2015-05-28 11:32:10 +09:30
symlink.c don't pass nameidata to ->follow_link() 2015-05-10 22:20:15 -04:00
sysctl.c nfs: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:16 -07:00
unlink.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
write.c NFS client updates for Linux 4.2 2015-07-02 11:32:23 -07:00