kernel.git/fs/nfs/filelayout/filelayoutdev.c, branch linux-4.4.y

NFSv4.1: nfs4_fl_prepare_ds must be careful about reporting success.

2017-01-19T19:17:22Z

commit cfd278c280f997cf2fe4662e0acab0fe465f637b upstream. Various places assume that if nfs4_fl_prepare_ds() turns a non-NULL 'ds', then ds->ds_clp will also be non-NULL. This is not necessasrily true in the case when the process received a fatal signal while nfs4_pnfs_ds_connect is waiting in nfs4_wait_ds_connect(). In that case ->ds_clp may not be set, and the devid may not recently have been marked unavailable. So add a test for ds_clp == NULL and return NULL in that case. Fixes: c23266d532b4 ("NFS4.1 Fix data server connection race") Signed-off-by: NeilBrown Acked-by: Olga Kornievskaia Acked-by: Adamson, Andy Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman

NFSv4.1: Convert pNFS deviceid to use kfree_rcu()

2015-03-27T16:32:24Z

Use of synchronize_rcu() when unmounting and potentially freeing a lot of deviceids is problematic. There really is no reason why we can't just use kfree_rcu() here. Signed-off-by: Trond Myklebust

nfs41: allow LD to choose DS connection version/minor_version

2015-02-03T19:06:34Z

flexfile layout may need to set such when making DS connections. Signed-off-by: Peng Tao Signed-off-by: Tom Haynes

nfs41: allow LD to choose DS connection auth flavor

2015-02-03T19:06:33Z

flexfile layout may use different auth flavor as specified by MDS. Reviewed-by: Jeff Layton Signed-off-by: Peng Tao Signed-off-by: Tom Haynes

nfs41: pull nfs4_ds_connect from file layout to generic pnfs

2015-02-03T19:06:32Z

It can be reused by flexfiles layout client. Reviewed-by: Jeff Layton Signed-off-by: Peng Tao Signed-off-by: Tom Haynes

nfs41: pull decode_ds_addr from file layout to generic pnfs

2015-02-03T19:06:32Z

It can be reused by flexfile layout. Reviewed-by: Jeff Layton Signed-off-by: Peng Tao Signed-off-by: Tom Haynes

nfs41: pull data server cache from file layout to generic pnfs

2015-02-03T19:06:32Z

Also pull nfs4_pnfs_ds_addr and nfs4_pnfs_ds to generic pnfs. They can all be reused by flexfile layout as well. Reviewed-by: Jeff Layton Signed-off-by: Peng Tao Signed-off-by: Tom Haynes

pnfs: Prepare for flexfiles by pulling out common code

2015-02-03T19:06:31Z

The flexfilelayout driver will share some common code with the filelayout driver. This set of changes refactors that common code out to avoid any module depenencies. Signed-off-by: Tom Haynes

NFS: Deletion of unnecessary checks before the function call "nfs_put_client"

2014-11-25T01:07:27Z

The nfs_put_client() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring Signed-off-by: Trond Myklebust

pnfs: factor GETDEVICEINFO implementations

2014-09-10T19:47:03Z

Add support to the common pNFS core to issue GETDEVICEINFO calls on a device ID cache miss. The code is taken from the well debugged file layout implementation and calls out to the layoutdriver through a new alloc_deviceid_node method. The calling conventions for nfs4_find_get_deviceid are changed so that all information needed to send a GETDEVICEINFO request is passed to the common code. Signed-off-by: Christoph Hellwig Signed-off-by: Trond Myklebust