swap-over-NFS currently doesn't work. Even after these patches it still
won't work. Some core MM changes are needed.
However these patches make a number of improvements to NFS and SUNRPC so
that swap-over-NFS can work once those mm changes land.
There is one change since the last posting of these patches.
The last patch was added to fix a potential hang when enabling swap.
Trond/Anna - is their any chance these can go in on the next merge
window?
Thanks,
NeilBrown
---
NeilBrown (11):
NFS: remove IS_SWAPFILE hack
SUNRPC/call_alloc: async tasks mustn't block waiting for memory
SUNRPC/auth: async tasks mustn't block waiting for memory
SUNRPC/xprt: async tasks mustn't block waiting for memory
SUNRPC: remove scheduling boost for "SWAPPER" tasks.
NFS: discard NFS_RPC_SWAPFLAGS and RPC_TASK_ROOTCREDS
SUNRPC: improve 'swap' handling: scheduling and PF_MEMALLOC
NFSv4: keep state manager thread active if swap is enabled
NFS: swap IO handling is slightly different for O_DIRECT IO
NFS: swap-out must always use STABLE writes.
SUNRPC: change locking for xs_swap_enable/disable
fs/nfs/direct.c | 48 ++++++++++++++++++++++-----------
fs/nfs/file.c | 19 +++++++++----
fs/nfs/nfs4_fs.h | 1 +
fs/nfs/nfs4proc.c | 20 ++++++++++++++
fs/nfs/nfs4state.c | 39 ++++++++++++++++++++++-----
fs/nfs/read.c | 4 ---
fs/nfs/write.c | 2 ++
include/linux/nfs_fs.h | 13 +++------
include/linux/nfs_xdr.h | 2 ++
include/linux/sunrpc/auth.h | 1 +
include/linux/sunrpc/sched.h | 1 -
include/trace/events/sunrpc.h | 1 -
net/sunrpc/auth.c | 8 ++++--
net/sunrpc/auth_gss/auth_gss.c | 6 ++++-
net/sunrpc/auth_unix.c | 10 +++++--
net/sunrpc/clnt.c | 7 +++--
net/sunrpc/sched.c | 29 +++++++++++++-------
net/sunrpc/xprt.c | 19 +++++--------
net/sunrpc/xprtrdma/transport.c | 10 ++++---
net/sunrpc/xprtsock.c | 34 ++++++++++++-----------
20 files changed, 185 insertions(+), 89 deletions(-)
--
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