kernel.git/include/linux/sunrpc/sched.h, branch linux-6.0.y

SUNRPC: Shrink size of struct rpc_task

2022-07-23T18:47:28Z

Move the field 'tk_rpc_status' so that we eliminate a 4 byte hole in the structure. For x86_64, this shrinks the size of the struct by 8 bytes. 'pahole' output before the change: /* size: 232, cachelines: 4, members: 27 */ /* sum members: 222, holes: 1, sum holes: 4 */ /* sum bitfield members: 8 bits (1 bytes) */ /* padding: 5 */ /* last cacheline: 40 bytes */ 'pahole' output after the change: /* size: 224, cachelines: 4, members: 27 */ /* padding: 1 */ /* last cacheline: 32 bytes */ Signed-off-by: Trond Myklebust

NFS: Fix memory allocation in rpc_malloc()

2022-03-22T19:52:55Z

When in a low memory situation, we do want rpciod to kick off direct reclaim in the case where that helps, however we don't want it looping forever in mempool_alloc(). So first try allocating from the slab using GFP_KERNEL | __GFP_NORETRY, and then fall back to a GFP_NOWAIT allocation from the mempool. Ditto for rpc_alloc_task() Signed-off-by: Trond Myklebust

NFS: discard NFS_RPC_SWAPFLAGS and RPC_TASK_ROOTCREDS

2022-03-13T16:59:35Z

NFS_RPC_SWAPFLAGS is only used for READ requests. It sets RPC_TASK_SWAPPER which gives some memory-allocation priority to requests. This is not needed for swap READ - though it is for writes where it is set via a different mechanism. RPC_TASK_ROOTCREDS causes the 'machine' credential to be used. This is not needed as the root credential is saved when the swap file is opened, and this is used for all IO. So NFS_RPC_SWAPFLAGS isn't needed, and as it is the only user of RPC_TASK_ROOTCREDS, that isn't needed either. Remove both. Signed-off-by: NeilBrown Signed-off-by: Trond Myklebust

SUNRPC: Remove unnecessary memory barriers

2021-10-04T00:49:05Z

The only check for RPC_TASK_RUNNING is the one in rpc_make_runnable(), which happens under the same spin lock held when we call rpc_clear_running(). Ditto, the last check for RPC_TASK_QUEUED in rpc_execute() is performed under the same lock as the one held when we call rpc_clear_queued(). Signed-off-by: Trond Myklebust

NFSv4.1 identify and mark RPC tasks that can move between transports

2021-07-08T18:03:24Z

In preparation for when we can re-try a task on a different transport, identify and mark such RPC tasks as moveable. Only 4.1+ operarations can be re-tried on a different transport. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

SUNRPC: Add a flag to avoid reference counts on credentials

2020-03-16T12:34:28Z

Add a flag to signal to the RPC layer that the credential is already pinned for the duration of the RPC call. Signed-off-by: Trond Myklebust

Merge tag 'nfs-for-5.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

2019-09-26T19:20:14Z

Pull NFS client updates from Anna Schumaker: "Stable bugfixes: - Dequeue the request from the receive queue while we're re-encoding # v4.20+ - Fix buffer handling of GSS MIC without slack # 5.1 Features: - Increase xprtrdma maximum transport header and slot table sizes - Add support for nfs4_call_sync() calls using a custom rpc_task_struct - Optimize the default readahead size - Enable pNFS filelayout LAYOUTGET on OPEN Other bugfixes and cleanups: - Fix possible null-pointer dereferences and memory leaks - Various NFS over RDMA cleanups - Various NFS over RDMA comment updates - Don't receive TCP data into a reset request buffer - Don't try to parse incomplete RPC messages - Fix congestion window race with disconnect - Clean up pNFS return-on-close error handling - Fixes for NFS4ERR_OLD_STATEID handling" * tag 'nfs-for-5.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (53 commits) pNFS/filelayout: enable LAYOUTGET on OPEN NFS: Optimise the default readahead size NFSv4: Handle NFS4ERR_OLD_STATEID in LOCKU NFSv4: Handle NFS4ERR_OLD_STATEID in CLOSE/OPEN_DOWNGRADE NFSv4: Fix OPEN_DOWNGRADE error handling pNFS: Handle NFS4ERR_OLD_STATEID on layoutreturn by bumping the state seqid NFSv4: Add a helper to increment stateid seqids NFSv4: Handle RPC level errors in LAYOUTRETURN NFSv4: Handle NFS4ERR_DELAY correctly in return-on-close NFSv4: Clean up pNFS return-on-close error handling pNFS: Ensure we do clear the return-on-close layout stateid on fatal errors NFS: remove unused check for negative dentry NFSv3: use nfs_add_or_obtain() to create and reference inodes NFS: Refactor nfs_instantiate() for dentry referencing callers SUNRPC: Fix congestion window race with disconnect SUNRPC: Don't try to parse incomplete RPC messages SUNRPC: Rename xdr_buf_read_netobj to xdr_buf_read_mic SUNRPC: Fix buffer handling of GSS MIC without slack SUNRPC: RPC level errors should always set task->tk_rpc_status SUNRPC: Don't receive TCP data into a request buffer that has been reset ...

Revert "NFSv4/flexfiles: Abort I/O early if the layout segment was invalidated"

2019-08-26T19:31:29Z

This reverts commit a79f194aa4879e9baad118c3f8bb2ca24dbef765. The mechanism for aborting I/O is racy, since we are not guaranteed that the request is asleep while we're changing both task->tk_status and task->tk_action. Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org # v5.1

SUNRPC: Remove rpc_wake_up_queued_task_on_wq()

2019-08-20T14:02:22Z

Clean up: commit c544577daddb ("SUNRPC: Clean up transport write space handling") appears to have removed the last caller of rpc_wake_up_queued_task_on_wq(). Signed-off-by: Chuck Lever Signed-off-by: Anna Schumaker

Merge branch 'multipath_tcp'

2019-07-06T18:54:52Z