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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-08-09 17:38:14 +0200 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-08-09 17:38:14 +0200 |
commit | 8b80fc02b829a59602b0f53eb9393ffb2db2659d (patch) | |
tree | 9cce02e07ed1b30d6f6bd236a2d6015e5681eeb9 /fs | |
parent | hexdump: use const notation (diff) | |
parent | SUNRPC: Replace flush_workqueue() with cancel_work_sync() and friends (diff) | |
download | linux-8b80fc02b829a59602b0f53eb9393ffb2db2659d.tar.xz linux-8b80fc02b829a59602b0f53eb9393ffb2db2659d.zip |
Merge git://git.linux-nfs.org/pub/linux/nfs-2.6
* git://git.linux-nfs.org/pub/linux/nfs-2.6:
SUNRPC: Replace flush_workqueue() with cancel_work_sync() and friends
NFS: Replace flush_scheduled_work with cancel_work_sync() and friends
SUNRPC: Don't call gss_delete_sec_context() from an rcu context
NFSv4: Don't call put_rpccred() from an rcu callback
NFS: Fix NFSv4 open stateid regressions
NFSv4: Fix a locking regression in nfs4_set_mode_locked()
NFS: Fix put_nfs_open_context
SUNRPC: Fix a race in rpciod_down()
Diffstat (limited to 'fs')
-rw-r--r-- | fs/nfs/delegation.c | 21 | ||||
-rw-r--r-- | fs/nfs/inode.c | 24 | ||||
-rw-r--r-- | fs/nfs/namespace.c | 6 | ||||
-rw-r--r-- | fs/nfs/nfs4proc.c | 16 | ||||
-rw-r--r-- | fs/nfs/nfs4renewd.c | 5 | ||||
-rw-r--r-- | fs/nfs/nfs4state.c | 5 |
6 files changed, 35 insertions, 42 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 20ac403469a0..c55a761c22bb 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -20,10 +20,8 @@ #include "delegation.h" #include "internal.h" -static void nfs_free_delegation(struct nfs_delegation *delegation) +static void nfs_do_free_delegation(struct nfs_delegation *delegation) { - if (delegation->cred) - put_rpccred(delegation->cred); kfree(delegation); } @@ -31,7 +29,18 @@ static void nfs_free_delegation_callback(struct rcu_head *head) { struct nfs_delegation *delegation = container_of(head, struct nfs_delegation, rcu); - nfs_free_delegation(delegation); + nfs_do_free_delegation(delegation); +} + +static void nfs_free_delegation(struct nfs_delegation *delegation) +{ + struct rpc_cred *cred; + + cred = rcu_dereference(delegation->cred); + rcu_assign_pointer(delegation->cred, NULL); + call_rcu(&delegation->rcu, nfs_free_delegation_callback); + if (cred) + put_rpccred(cred); } static int nfs_delegation_claim_locks(struct nfs_open_context *ctx, struct nfs4_state *state) @@ -166,7 +175,7 @@ static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation * int res = 0; res = nfs4_proc_delegreturn(inode, delegation->cred, &delegation->stateid); - call_rcu(&delegation->rcu, nfs_free_delegation_callback); + nfs_free_delegation(delegation); return res; } @@ -448,7 +457,7 @@ restart: spin_unlock(&clp->cl_lock); rcu_read_unlock(); if (delegation != NULL) - call_rcu(&delegation->rcu, nfs_free_delegation_callback); + nfs_free_delegation(delegation); goto restart; } rcu_read_unlock(); diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index bca6cdcb9f0d..71a49c3acabd 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -468,7 +468,7 @@ static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, str ctx->lockowner = current->files; ctx->error = 0; ctx->dir_cookie = 0; - kref_init(&ctx->kref); + atomic_set(&ctx->count, 1); } return ctx; } @@ -476,21 +476,18 @@ static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, str struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx) { if (ctx != NULL) - kref_get(&ctx->kref); + atomic_inc(&ctx->count); return ctx; } -static void nfs_free_open_context(struct kref *kref) +void put_nfs_open_context(struct nfs_open_context *ctx) { - struct nfs_open_context *ctx = container_of(kref, - struct nfs_open_context, kref); + struct inode *inode = ctx->path.dentry->d_inode; - if (!list_empty(&ctx->list)) { - struct inode *inode = ctx->path.dentry->d_inode; - spin_lock(&inode->i_lock); - list_del(&ctx->list); - spin_unlock(&inode->i_lock); - } + if (!atomic_dec_and_lock(&ctx->count, &inode->i_lock)) + return; + list_del(&ctx->list); + spin_unlock(&inode->i_lock); if (ctx->state != NULL) nfs4_close_state(&ctx->path, ctx->state, ctx->mode); if (ctx->cred != NULL) @@ -500,11 +497,6 @@ static void nfs_free_open_context(struct kref *kref) kfree(ctx); } -void put_nfs_open_context(struct nfs_open_context *ctx) -{ - kref_put(&ctx->kref, nfs_free_open_context); -} - /* * Ensure that mmap has a recent RPC credential for use when writing out * shared pages diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index 7f86e65182e4..aea76d0e5fbd 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -175,10 +175,8 @@ static void nfs_expire_automounts(struct work_struct *work) void nfs_release_automount_timer(void) { - if (list_empty(&nfs_automount_list)) { - cancel_delayed_work(&nfs_automount_task); - flush_scheduled_work(); - } + if (list_empty(&nfs_automount_list)) + cancel_delayed_work_sync(&nfs_automount_task); } /* diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 6ca2795ccd9c..62b3ae280310 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -332,11 +332,9 @@ static int can_open_cached(struct nfs4_state *state, int mode) switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) { case FMODE_READ: ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; - ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; break; case FMODE_WRITE: ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; - ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; break; case FMODE_READ|FMODE_WRITE: ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; @@ -1260,7 +1258,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) nfs_increment_open_seqid(task->tk_status, calldata->arg.seqid); switch (task->tk_status) { case 0: - nfs_set_open_stateid(state, &calldata->res.stateid, calldata->arg.open_flags); + nfs_set_open_stateid(state, &calldata->res.stateid, 0); renew_lease(server, calldata->timestamp); break; case -NFS4ERR_STALE_STATEID: @@ -1286,23 +1284,19 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) .rpc_cred = state->owner->so_cred, }; int clear_rd, clear_wr, clear_rdwr; - int mode; if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) return; - mode = FMODE_READ|FMODE_WRITE; clear_rd = clear_wr = clear_rdwr = 0; spin_lock(&state->owner->so_lock); /* Calculate the change in open mode */ if (state->n_rdwr == 0) { if (state->n_rdonly == 0) { - mode &= ~FMODE_READ; clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); } if (state->n_wronly == 0) { - mode &= ~FMODE_WRITE; clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); } @@ -1314,9 +1308,13 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) return; } nfs_fattr_init(calldata->res.fattr); - if (mode != 0) + if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; - calldata->arg.open_flags = mode; + calldata->arg.open_flags = FMODE_READ; + } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { + msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; + calldata->arg.open_flags = FMODE_WRITE; + } calldata->timestamp = jiffies; rpc_call_setup(task, &msg, 0); } diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c index 0505ca124034..3ea352d82eba 100644 --- a/fs/nfs/nfs4renewd.c +++ b/fs/nfs/nfs4renewd.c @@ -127,16 +127,15 @@ nfs4_schedule_state_renewal(struct nfs_client *clp) void nfs4_renewd_prepare_shutdown(struct nfs_server *server) { - flush_scheduled_work(); + cancel_delayed_work(&server->nfs_client->cl_renewd); } void nfs4_kill_renewd(struct nfs_client *clp) { down_read(&clp->cl_sem); - cancel_delayed_work(&clp->cl_renewd); + cancel_delayed_work_sync(&clp->cl_renewd); up_read(&clp->cl_sem); - flush_scheduled_work(); } /* diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index e9662ba81d86..3e4adf8c8312 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -341,8 +341,6 @@ nfs4_state_set_mode_locked(struct nfs4_state *state, mode_t mode) else list_move_tail(&state->open_states, &state->owner->so_states); } - if (mode == 0) - list_del_init(&state->inode_states); state->state = mode; } @@ -415,8 +413,7 @@ void nfs4_put_open_state(struct nfs4_state *state) if (!atomic_dec_and_lock(&state->count, &owner->so_lock)) return; spin_lock(&inode->i_lock); - if (!list_empty(&state->inode_states)) - list_del(&state->inode_states); + list_del(&state->inode_states); list_del(&state->open_states); spin_unlock(&inode->i_lock); spin_unlock(&owner->so_lock); |