diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-09 18:11:22 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-09 18:11:22 -0800 |
commit | e6604ecb70d4b1dbc0372c6518b51c25c4b135a1 (patch) | |
tree | 2d12c51b84c3ba8472e59ddbe37da034e2c5251f /fs/nfs/nfs4proc.c | |
parent | 9d74288ca79249af4b906215788b37d52263b58b (diff) | |
parent | 941c3ff3102ccce440034d59cf9e4e9cc10b720d (diff) |
Merge tag 'nfs-for-4.4-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
New features:
- RDMA client backchannel from Chuck
- Support for NFSv4.2 file CLONE using the btrfs ioctl
Bugfixes + cleanups:
- Move socket data receive out of the bottom halves and into a
workqueue
- Refactor NFSv4 error handling so synchronous and asynchronous RPC
handles errors identically.
- Fix a panic when blocks or object layouts reads return a bad data
length
- Fix nfsroot so it can handle a 1024 byte long path.
- Fix bad usage of page offset in bl_read_pagelist
- Various NFSv4 callback cleanups+fixes
- Fix GETATTR bitmap verification
- Support hexadecimal number for sunrpc debug sysctl files"
* tag 'nfs-for-4.4-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (53 commits)
Sunrpc: Supports hexadecimal number for sysctl files of sunrpc debug
nfs: Fix GETATTR bitmap verification
nfs: Remove unused xdr page offsets in getacl/setacl arguments
fs/nfs: remove unnecessary new_valid_dev check
SUNRPC: fix variable type
NFS: Enable client side NFSv4.1 backchannel to use other transports
pNFS/flexfiles: Add support for FF_FLAGS_NO_IO_THRU_MDS
pNFS/flexfiles: When mirrored, retry failed reads by switching mirrors
SUNRPC: Remove the TCP-only restriction in bc_svc_process()
svcrdma: Add backward direction service for RPC/RDMA transport
xprtrdma: Handle incoming backward direction RPC calls
xprtrdma: Add support for sending backward direction RPC replies
xprtrdma: Pre-allocate Work Requests for backchannel
xprtrdma: Pre-allocate backward rpc_rqst and send/receive buffers
SUNRPC: Abstract backchannel operations
xprtrdma: Saving IRQs no longer needed for rb_lock
xprtrdma: Remove reply tasklet
xprtrdma: Use workqueue to process RPC/RDMA replies
xprtrdma: Replace send and receive arrays
xprtrdma: Refactor reply handler error handling
...
Diffstat (limited to 'fs/nfs/nfs4proc.c')
-rw-r--r-- | fs/nfs/nfs4proc.c | 182 |
1 files changed, 91 insertions, 91 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 0e5ff69455c7..ff5bddc49a2a 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -78,7 +78,6 @@ struct nfs4_opendata; static int _nfs4_proc_open(struct nfs4_opendata *data); static int _nfs4_recover_proc_open(struct nfs4_opendata *data); static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); -static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *, long *); static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); @@ -239,6 +238,7 @@ const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_FS_LAYOUT_TYPES, FATTR4_WORD2_LAYOUT_BLKSIZE + | FATTR4_WORD2_CLONE_BLKSIZE }; const u32 nfs4_fs_locations_bitmap[3] = { @@ -344,13 +344,16 @@ static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) /* This is the error handling routine for processes that are allowed * to sleep. */ -int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) +static int nfs4_do_handle_exception(struct nfs_server *server, + int errorcode, struct nfs4_exception *exception) { struct nfs_client *clp = server->nfs_client; struct nfs4_state *state = exception->state; struct inode *inode = exception->inode; int ret = errorcode; + exception->delay = 0; + exception->recovering = 0; exception->retry = 0; switch(errorcode) { case 0: @@ -359,11 +362,9 @@ int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_ case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: - if (inode && nfs4_have_delegation(inode, FMODE_READ)) { - nfs4_inode_return_delegation(inode); - exception->retry = 1; - return 0; - } + if (inode && nfs_async_inode_return_delegation(inode, + NULL) == 0) + goto wait_on_recovery; if (state == NULL) break; ret = nfs4_schedule_stateid_recovery(server, state); @@ -409,11 +410,12 @@ int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_ ret = -EBUSY; break; } - case -NFS4ERR_GRACE: case -NFS4ERR_DELAY: - ret = nfs4_delay(server->client, &exception->timeout); - if (ret != 0) - break; + nfs_inc_server_stats(server, NFSIOS_DELAY); + case -NFS4ERR_GRACE: + exception->delay = 1; + return 0; + case -NFS4ERR_RETRY_UNCACHED_REP: case -NFS4ERR_OLD_STATEID: exception->retry = 1; @@ -434,14 +436,85 @@ int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_ /* We failed to handle the error */ return nfs4_map_errors(ret); wait_on_recovery: - ret = nfs4_wait_clnt_recover(clp); + exception->recovering = 1; + return 0; +} + +/* This is the error handling routine for processes that are allowed + * to sleep. + */ +int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) +{ + struct nfs_client *clp = server->nfs_client; + int ret; + + ret = nfs4_do_handle_exception(server, errorcode, exception); + if (exception->delay) { + ret = nfs4_delay(server->client, &exception->timeout); + goto out_retry; + } + if (exception->recovering) { + ret = nfs4_wait_clnt_recover(clp); + if (test_bit(NFS_MIG_FAILED, &server->mig_status)) + return -EIO; + goto out_retry; + } + return ret; +out_retry: + if (ret == 0) + exception->retry = 1; + return ret; +} + +static int +nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server, + int errorcode, struct nfs4_exception *exception) +{ + struct nfs_client *clp = server->nfs_client; + int ret; + + ret = nfs4_do_handle_exception(server, errorcode, exception); + if (exception->delay) { + rpc_delay(task, nfs4_update_delay(&exception->timeout)); + goto out_retry; + } + if (exception->recovering) { + rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); + if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) + rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); + goto out_retry; + } if (test_bit(NFS_MIG_FAILED, &server->mig_status)) - return -EIO; + ret = -EIO; + return ret; +out_retry: if (ret == 0) exception->retry = 1; return ret; } +static int +nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server, + struct nfs4_state *state, long *timeout) +{ + struct nfs4_exception exception = { + .state = state, + }; + + if (task->tk_status >= 0) + return 0; + if (timeout) + exception.timeout = *timeout; + task->tk_status = nfs4_async_handle_exception(task, server, + task->tk_status, + &exception); + if (exception.delay && timeout) + *timeout = exception.timeout; + if (exception.retry) + return -EAGAIN; + return 0; +} + /* * Return 'true' if 'clp' is using an rpc_client that is integrity protected * or 'false' otherwise. @@ -4530,7 +4603,7 @@ static inline int nfs4_server_supports_acls(struct nfs_server *server) #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) static int buf_to_pages_noslab(const void *buf, size_t buflen, - struct page **pages, unsigned int *pgbase) + struct page **pages) { struct page *newpage, **spages; int rc = 0; @@ -4674,7 +4747,6 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu goto out_free; args.acl_len = npages * PAGE_SIZE; - args.acl_pgbase = 0; dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", __func__, buf, buflen, npages, args.acl_len); @@ -4766,7 +4838,7 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl return -EOPNOTSUPP; if (npages > ARRAY_SIZE(pages)) return -ERANGE; - i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); + i = buf_to_pages_noslab(buf, buflen, arg.acl_pages); if (i < 0) return i; nfs4_inode_return_delegation(inode); @@ -4955,79 +5027,6 @@ out: #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ -static int -nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, - struct nfs4_state *state, long *timeout) -{ - struct nfs_client *clp = server->nfs_client; - - if (task->tk_status >= 0) - return 0; - switch(task->tk_status) { - case -NFS4ERR_DELEG_REVOKED: - case -NFS4ERR_ADMIN_REVOKED: - case -NFS4ERR_BAD_STATEID: - case -NFS4ERR_OPENMODE: - if (state == NULL) - break; - if (nfs4_schedule_stateid_recovery(server, state) < 0) - goto recovery_failed; - goto wait_on_recovery; - case -NFS4ERR_EXPIRED: - if (state != NULL) { - if (nfs4_schedule_stateid_recovery(server, state) < 0) - goto recovery_failed; - } - case -NFS4ERR_STALE_STATEID: - case -NFS4ERR_STALE_CLIENTID: - nfs4_schedule_lease_recovery(clp); - goto wait_on_recovery; - case -NFS4ERR_MOVED: - if (nfs4_schedule_migration_recovery(server) < 0) - goto recovery_failed; - goto wait_on_recovery; - case -NFS4ERR_LEASE_MOVED: - nfs4_schedule_lease_moved_recovery(clp); - goto wait_on_recovery; -#if defined(CONFIG_NFS_V4_1) - case -NFS4ERR_BADSESSION: - case -NFS4ERR_BADSLOT: - case -NFS4ERR_BAD_HIGH_SLOT: - case -NFS4ERR_DEADSESSION: - case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: - case -NFS4ERR_SEQ_FALSE_RETRY: - case -NFS4ERR_SEQ_MISORDERED: - dprintk("%s ERROR %d, Reset session\n", __func__, - task->tk_status); - nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); - goto wait_on_recovery; -#endif /* CONFIG_NFS_V4_1 */ - case -NFS4ERR_DELAY: - nfs_inc_server_stats(server, NFSIOS_DELAY); - rpc_delay(task, nfs4_update_delay(timeout)); - goto restart_call; - case -NFS4ERR_GRACE: - rpc_delay(task, NFS4_POLL_RETRY_MAX); - case -NFS4ERR_RETRY_UNCACHED_REP: - case -NFS4ERR_OLD_STATEID: - goto restart_call; - } - task->tk_status = nfs4_map_errors(task->tk_status); - return 0; -recovery_failed: - task->tk_status = -EIO; - return 0; -wait_on_recovery: - rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); - if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) - rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); - if (test_bit(NFS_MIG_FAILED, &server->mig_status)) - goto recovery_failed; -restart_call: - task->tk_status = 0; - return -EAGAIN; -} - static void nfs4_init_boot_verifier(const struct nfs_client *clp, nfs4_verifier *bootverf) { @@ -5522,7 +5521,7 @@ struct nfs4_unlockdata { struct nfs4_lock_state *lsp; struct nfs_open_context *ctx; struct file_lock fl; - const struct nfs_server *server; + struct nfs_server *server; unsigned long timestamp; }; @@ -8718,7 +8717,8 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | NFS_CAP_ALLOCATE | NFS_CAP_DEALLOCATE | NFS_CAP_SEEK - | NFS_CAP_LAYOUTSTATS, + | NFS_CAP_LAYOUTSTATS + | NFS_CAP_CLONE, .init_client = nfs41_init_client, .shutdown_client = nfs41_shutdown_client, .match_stateid = nfs41_match_stateid, |