linux-toradex.git/fs/nfs/nfs4filelayoutdev.c, branch v3.10.83

NFSv4.1: nfs4_fl_prepare_ds - fix bugs when the connect attempt fails

2013-10-13T23:08:33+00:00

commit 52b26a3e1bb3e065c32b3febdac1e1f117d88e15 upstream.

- Fix an Oops when nfs4_ds_connect() returns an error.
- Always check the device status after waiting for a connect to complete.

Reported-by: Andy Adamson 
Reported-by: Jeff Layton 
Signed-off-by: Trond Myklebust 
Signed-off-by: Greg Kroah-Hartman

NFS4.1 Fix data server connection race

2013-05-08T21:19:32+00:00

Unlike meta data server mounts which support multiple mount points to
the same server via struct nfs_server, data servers support a single connection.

Concurrent calls to setup the data server connection can race where the first
call allocates the nfs_client struct, and before the cache struct nfs_client
pointer can be set, a second call also tries to setup the connection, finds the
already allocated nfs_client, bumps the reference count, re-initializes the
session,etc. This results in a hanging data server session after umount.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

sunrpc: move address copy/cmp/convert routines and prototypes from clnt.h to addr.h

2013-02-05T14:41:14+00:00

These routines are used by server and client code, so having them in a
separate header would be best.

Signed-off-by: Jeff Layton 
Acked-by: Trond Myklebust 
Signed-off-by: J. Bruce Fields

NFSv4.1: Cleanup move session slot management to fs/nfs/nfs4session.c

2012-12-05T23:30:45+00:00

NFSv4.1 session management is getting complex enough to deserve
a separate file.

Signed-off-by: Trond Myklebust

NFSv4.1: Remove assertion BUG_ON()s from the files and generic layout code

2012-11-04T19:43:39+00:00

Signed-off-by: Trond Myklebust

NFSv4.1: Kill nfs4_ds_disconnect()

2012-10-15T14:49:42+00:00

There is nothing to prevent another thread from dereferencing ds->ds_clp
during or after the call to nfs4_ds_disconnect(), and Oopsing due to the
resulting NULL pointer.

Instead, we should just rely on filelayout_mark_devid_invalid() to keep
us out of trouble by avoiding that deviceid.

Signed-off-by: Trond Myklebust

NFSv4.1: pNFS data servers may be temporarily offline

2012-09-28T20:03:09+00:00

In cases where the pNFS data server is just temporarily out of service,
we want to mark it as such, and then try again later. Typically that will
be in cases of network connection errors etc.
This patch allows us to mark the devices as being "unavailable" for such
transient errors, and will make them available for retries after a
2 minute timeout period.

Signed-off-by: Trond Myklebust

NFSv4.1: Replace get_device_info() with filelayout_get_device_info()

2012-09-28T20:03:08+00:00

Fix the namespace pollution issue.

Signed-off-by: Trond Myklebust

NFSv4.1: Use session max response size for GETDEVICEINFO gdia_maxcount

2012-06-28T21:20:50+00:00

We prepare for the largest possible GETDEVICEINFO response, which
can not be greater than the negotiated session maximum response size.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

NFSv4.1: Fix session initialisation races

2012-05-23T19:20:57+00:00

Session initialisation is not complete until the lease manager
has run. We need to ensure that both nfs4_init_session and
nfs4_init_ds_session do so, and that they check for any resulting
errors in clp->cl_cons_state.

Only after this is done, can nfs4_ds_connect check the contents
of clp->cl_exchange_flags.

Signed-off-by: Trond Myklebust 
Cc: Andy Adamson