v3:
- use sort() from lib/sort.c to sort the list
v2:
- rework Tigran's patch to preserve existing selection behaviour
- simplify layout driver selection by sorting the list
This is v3 of the patchset. The main change is that this patch doesn't
use a hand-rolled bubble sort, but rather the heapsort library in
lib/sort.c. This is mostly for conciseness since the array sizes are
generally so small that it shouldn't make any perf difference.
Note that this does mean that we need to keep track on the number of
elements in the array that the server sends, so there are a few
ancillary changes to deal with that as well.
Only lightly tested by mounting a server that sends both flexfiles and
block layouts. The client successfully selected the block layout in most
cases, but if I blacklist blocklayoutdriver then it selects flexfiles
instead.
I'm sending these together, but I'd expect Bruce to pick up the nfsd
patches and Trond or Anna to pick up the client-side ones.
The nfsd patch is based on top of Tom's nfsd flexfile layout patches.
Jeff Layton (3):
nfsd: allow nfsd to advertise multiple layout types
pnfs: track multiple layout types in fsinfo structure
pnfs: add a new mechanism to select a layout driver according to an
ordered list
fs/nfs/client.c | 3 ++-
fs/nfs/nfs4proc.c | 3 ++-
fs/nfs/nfs4xdr.c | 40 +++++++++++++++--------------
fs/nfs/pnfs.c | 67 ++++++++++++++++++++++++++++++++++++++++---------
fs/nfs/pnfs.h | 5 ++--
fs/nfsd/export.c | 4 +--
fs/nfsd/export.h | 2 +-
fs/nfsd/nfs4layouts.c | 6 ++---
fs/nfsd/nfs4proc.c | 4 +--
fs/nfsd/nfs4xdr.c | 30 +++++++++++-----------
include/linux/nfs_xdr.h | 8 +++++-
11 files changed, 112 insertions(+), 60 deletions(-)
--
2.5.5
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