linux.git/fs/nfs/flexfilelayout/flexfilelayoutdev.c, branch v6.0

NFS: Allow setting rsize / wsize to a multiple of PAGE_SIZE

2022-07-12T14:53:10+00:00

Previously, we required this to value to be a power of 2 for UDP related
reasons. This patch keeps the power of 2 rule for UDP but allows more
flexibility for TCP and RDMA.

Signed-off-by: Anna Schumaker 
Signed-off-by: Trond Myklebust

pnfs/flexfiles: Fix misplaced barrier in nfs4_ff_layout_prepare_ds

2021-10-04T03:00:50+00:00

_nfs4_pnfs_v3/v4_ds_connect do
   some work
   smp_wmb
   ds->ds_clp = clp;

And nfs4_ff_layout_prepare_ds currently does
   smp_rmb
   if(ds->ds_clp)
      ...

This patch places the smp_rmb after the if. This ensures that following
reads only happen once nfs4_ff_layout_prepare_ds has checked that data
has been properly initialized.

Fixes: d67ae825a59d6 ("pnfs/flexfiles: Add the FlexFile Layout Driver")
Signed-off-by: Baptiste Lepers 
Signed-off-by: Trond Myklebust

SUNRPC: Add xdr_set_scratch_page() and xdr_reset_scratch_buffer()

2020-11-30T19:46:35+00:00

Clean up: De-duplicate some frequently-used code.

Signed-off-by: Chuck Lever

pnfs/flexfiles: Fix PTR_ERR() dereferences in ff_layout_track_ds_error

2019-07-18T18:43:52+00:00

mirror->mirror_ds can be NULL if uninitialised, but can contain
a PTR_ERR() if call to GETDEVICEINFO failed.

Fixes: 65990d1afbd2 ("pNFS/flexfiles: Fix a deadlock on LAYOUTGET")
Signed-off-by: Trond Myklebust 
Cc: stable@vger.kernel.org # 4.10+

NFS/flexfiles: Use the correct TCP timeout for flexfiles I/O

2019-06-28T15:48:52+00:00

Fix a typo where we're confusing the default TCP retrans value
(NFS_DEF_TCP_RETRANS) for the default TCP timeout value.

Fixes: 15d03055cf39f ("pNFS/flexfiles: Set reasonable default ...")
Cc: stable@vger.kernel.org # 4.8+
Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker

NFS/flexfiles: Clean up mirror DS initialisation

2019-03-02T03:37:39+00:00

Get rid of the redundant parameter and rename the function
ff_layout_mirror_valid() to ff_layout_init_mirror_ds() for clarity.

Signed-off-by: Trond Myklebust

NFS/flexfiles: Remove dead code in ff_layout_mirror_valid()

2019-03-02T03:37:38+00:00

nfs4_ff_alloc_deviceid_node() guarantees that if mirror->mirror_ds is
a valid pointer, then so is mirror->mirror_ds->ds.

Signed-off-by: Trond Myklebust

NFS/flexfile: Simplify nfs4_ff_layout_select_ds_stateid()

2019-03-02T03:37:38+00:00

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()

2019-03-02T03:37:38+00:00

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()

2019-03-02T03:37:38+00:00

Pass in a pointer to the mirror rather than forcing another
array access.

Signed-off-by: Trond Myklebust