wireguard-linux/fs/nfs/flexfilelayout/flexfilelayout.h, branch jd/unified-crypt-queue

pNFS/flexfiles: Simplify allocation of the mirror array

2020-03-26T14:52:04Z

Just allocate the array at the end of the layout segment structure, instead of allocating it as a separate array of pointers. Signed-off-by: Trond Myklebust

NFS/flexfile: Simplify nfs4_ff_layout_select_ds_stateid()

2019-03-02T03:37:38Z

Pass in a pointer to the mirror rather than forcing another array access. Signed-off-by: Trond Myklebust

NFS/flexfile: Simplify nfs4_ff_layout_ds_version()

2019-03-02T03:37:38Z

Pass in a pointer to the mirror rather than forcing another array access. Signed-off-by: Trond Myklebust

NFS/flexfiles: Simplify ff_layout_get_ds_cred()

2019-03-02T03:37:38Z

Pass in a pointer to the mirror rather than forcing another array access. Signed-off-by: Trond Myklebust

NFS/flexfiles: Simplify nfs4_ff_find_or_create_ds_client()

2019-03-02T03:37:38Z

Pass in a pointer to the mirror rather than forcing another array access. Signed-off-by: Trond Myklebust

NFS/flexfiles: Simplify nfs4_ff_layout_select_ds_fh()

2019-03-02T03:37:38Z

Pass in a pointer to the mirror rather than having to retrieve it from the array and then verify the resulting pointer. Signed-off-by: Trond Myklebust

NFS/flexfiles: Don't invalidate DS deviceids for being unresponsive

2019-03-02T03:37:38Z

If the DS is unresponsive, we want to just mark it as such, while reporting the errors. If the server later returns the same deviceid in a new layout, then we don't want to have to look it up again. Signed-off-by: Trond Myklebust

NFS/flexfiles: refactor calls to fs4_ff_layout_prepare_ds()

2019-03-02T03:37:37Z

While we may want to skip attempting to connect to a downed mirror when we're deciding which mirror to select for a read, we do not want to do so once we've committed to attempting the I/O in ff_layout_read/write_pagelist(), or ff_layout_initiate_commit() Signed-off-by: Trond Myklebust

NFS/flexfiles: Send LAYOUTERROR when failing over mirrored reads

2019-03-02T03:37:37Z

When a read to the preferred mirror returns an error, the flexfiles driver records the error in the inode list and currently marks the layout for return before failing over the attempted read to the next mirror. What we actually want to do is fire off a LAYOUTERROR to notify the MDS that there is an issue with the preferred mirror, then we fail over. Only once we've failed to read from all mirrors should we return the layout. Signed-off-by: Trond Myklebust

NFSv4/flexfiles: Fix invalid deref in FF_LAYOUT_DEVID_NODE()

2019-03-01T21:20:16Z

If the attempt to instantiate the mirror's layout DS pointer failed, then that pointer may hold a value of type ERR_PTR(), so we need to check that before we dereference it. Fixes: 65990d1afbd2d ("pNFS/flexfiles: Fix a deadlock on LAYOUTGET") Signed-off-by: Trond Myklebust