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874f946376
linux/fs/nfs
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Trond Myklebust 874f946376 NFS: Fix a regression in the read() syscall 
When invalidating the page cache for a regular file, we want to first
sync all dirty data to disk and then call invalidate_inode_pages2().
The latter relies on nfs_launder_page() and nfs_release_page() to deal
respectively with dirty pages, and unstable written pages.

When commit 9590544694 ("NFS: avoid deadlocks with loop-back mounted
NFS filesystems.") changed the behaviour of nfs_release_page(), then it
made it possible for invalidate_inode_pages2() to fail with an EBUSY.
Unfortunately, that error is then propagated back to read().

Let's therefore work around the problem for now by protecting the call
to sync the data and invalidate_inode_pages2() so that they are atomic
w.r.t. the addition of new writes.
Later on, we can revisit whether or not we still need nfs_launder_page()
and nfs_release_page().

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-03-03 13:02:29 -05:00
..
blocklayout pnfs: release lseg in pnfs_generic_pg_cleanup 2015-02-03 11:06:44 -08:00
filelayout pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit 2015-02-18 07:20:35 -08:00
flexfilelayout pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit 2015-02-18 07:20:35 -08:00
objlayout nfs: add nfs_pgio_current_mirror helper 2015-02-03 11:06:48 -08:00
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 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
callback_xdr.c NFSv4.1: Convert open-coded array allocation calls to kmalloc_array() 2015-02-11 19:02:52 -05:00
callback.c nfs: don't call blocking operations while !TASK_RUNNING 2015-01-30 20:39:50 -05:00
callback.h NFS: Add in v4.2 callback operation 2013-06-08 16:20:18 -04:00
client.c Merge branch 'bugfixes' into linux-next 2014-09-30 17:21:41 -04:00
delegation.c NFSv4: Ensure we skip delegations that are already being returned 2015-03-02 18:09:15 -05:00
delegation.h NFSv4: Fix races between nfs_remove_bad_delegation() and delegation return 2014-11-12 17:19:04 -05:00
dir.c NFS: Don't require a filehandle to refresh the inode in nfs_prime_dcache() 2015-03-01 23:23:07 -05:00
direct.c NFS: struct nfs_commit_info.lock must always point to inode->i_lock 2015-02-13 21:03:16 -05:00
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 NFS: Fix a regression in the read() syscall 2015-03-03 13:02:29 -05:00
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 switch d_materialise_unique() users to d_splice_alias() 2014-11-19 13:01:20 -05:00
idmap.c pnfs/flexfiles: Add the FlexFile Layout Driver 2015-02-03 11:06:52 -08:00
inode.c NFS: Fix a regression in the read() syscall 2015-03-03 13:02:29 -05:00
internal.h NFS: Add attribute update barriers to NFS writebacks 2015-03-01 23:23:06 -05:00
iostat.h nfs: define nfs_inc_fscache_stats and using it as possible 2014-11-24 20:08:47 -05:00
Kconfig pnfs/flexfiles: Add the FlexFile Layout Driver 2015-02-03 11:06:52 -08:00
Makefile pnfs/flexfiles: Add the FlexFile Layout Driver 2015-02-03 11:06:52 -08:00
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 nfs: use %p[dD] instead of open-coded (and often racy) equivalents 2013-10-24 23:34:50 -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 NFSv3: Fix missing includes of nfs3_fs.h 2014-09-25 16:28:53 -04:00
nfs3client.c nfs: set hostname when creating nfsv3 ds connection 2015-02-03 11:06:38 -08:00
nfs3proc.c NFS: Add attribute update barriers to NFS writebacks 2015-03-01 23:23:06 -05:00
nfs3super.c nfsv3: introduce nfs3_set_ds_client 2015-02-03 11:06:34 -08:00
nfs3xdr.c NFSv3: Use the readdir fileid as the mounted-on-fileid 2015-03-01 23:23:07 -05:00
nfs4_fs.h Merge branch 'flexfiles' 2015-02-03 16:01:27 -05:00
nfs4client.c Merge branch 'flexfiles' 2015-02-03 16:01:27 -05:00
nfs4file.c nfs: Add DEALLOCATE support 2014-11-25 16:38:32 -05:00
nfs4getroot.c NFSv4: Fix security auto-negotiation 2013-09-07 16:18:30 -04:00
nfs4namespace.c NFSv4: test SECINFO RPC_AUTH_GSS pseudoflavors for support 2014-06-24 18:46:58 -04:00
nfs4proc.c NFS: Fix stateid used for NFS v4 closes 2015-03-02 18:06:42 -05:00
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: Clean up create_session 2015-02-18 12:28:50 -08:00
nfs4state.c NFS client updates for Linux 3.20 2015-02-11 17:14:54 -08:00
nfs4super.c Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
nfs4sysctl.c nfs: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:16 -07:00
nfs4trace.c NFSv4.1: Add tracepoints for debugging slot table operations 2013-08-22 08:58:27 -04:00
nfs4trace.h nfs: merge nfs_pgio_data into _header 2014-06-24 18:47:00 -04:00
nfs4xdr.c NFSv4.1: Clean up bind_conn_to_session 2015-02-18 13:11:09 -08:00
nfs42.h nfs: Add DEALLOCATE support 2014-11-25 16:38:32 -05:00
nfs42proc.c nfs: Add DEALLOCATE support 2014-11-25 16:38:32 -05:00
nfs42xdr.c nfs: Add DEALLOCATE support 2014-11-25 16:38:32 -05:00
nfs.h
nfsroot.c NFS: a couple off by ones 2015-01-30 20:43:30 -05:00
nfstrace.c NFS: Add event tracing for generic NFS lookups 2013-08-22 08:58:18 -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 client updates for Linux 3.20 2015-02-11 17:14:54 -08:00
pnfs_dev.c pnfs: remove GETDEVICELIST implementation 2014-09-12 13:20:54 -04:00
pnfs_nfs.c pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit 2015-02-18 07:20:35 -08:00
pnfs.c pnfs: delete an unintended goto 2015-02-10 08:41:23 -05:00
pnfs.h pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit 2015-02-18 07:20:35 -08:00
proc.c NFS: Add attribute update barriers to NFS writebacks 2015-03-01 23:23:06 -05:00
read.c nfs: add mirroring support to pgio layer 2015-02-03 11:06:45 -08:00
super.c Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
symlink.c
sysctl.c nfs: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:16 -07:00
unlink.c nfs: emit a fsnotify_nameremove call in sillyrename codepath 2014-03-17 15:14:17 -04:00
write.c NFS: Add attribute update barriers to NFS writebacks 2015-03-01 23:23:06 -05:00