From 35079582e72efcabf7c70f3d3ee4f96e6f196606 Mon Sep 17 00:00:00 2001 From: Shan Wei Date: Fri, 14 Jan 2011 17:35:59 +0800 Subject: nfsd: kill unused macro definition These macros had never been used for several years. So, remove them. Signed-off-by: Shan Wei Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/nfsd/nfs4state.c') diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 54b60bfceb8d..c4f2b0f63e46 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -148,7 +148,7 @@ static struct list_head ownerstr_hashtbl[OWNER_HASH_SIZE]; /* hash table for nfs4_file */ #define FILE_HASH_BITS 8 #define FILE_HASH_SIZE (1 << FILE_HASH_BITS) -#define FILE_HASH_MASK (FILE_HASH_SIZE - 1) + /* hash table for (open)nfs4_stateid */ #define STATEID_HASH_BITS 10 #define STATEID_HASH_SIZE (1 << STATEID_HASH_BITS) -- cgit v1.2.2 From 529d7b2a7fa31e9f7d08bc790d232c3cbe64fa24 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Wed, 2 Mar 2011 23:48:33 -0500 Subject: nfsd4: minor nfs4state.c reshuffling Minor cleanup in preparation for a bugfix--moving some code to avoid forward references, etc. No change in functionality. Cc: stable@kernel.org Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 125 +++++++++++++++++++++++++--------------------------- 1 file changed, 61 insertions(+), 64 deletions(-) (limited to 'fs/nfsd/nfs4state.c') diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index c4f2b0f63e46..84d2dd327b2d 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -316,64 +316,6 @@ static struct list_head unconf_id_hashtbl[CLIENT_HASH_SIZE]; static struct list_head client_lru; static struct list_head close_lru; -static void unhash_generic_stateid(struct nfs4_stateid *stp) -{ - list_del(&stp->st_hash); - list_del(&stp->st_perfile); - list_del(&stp->st_perstateowner); -} - -static void free_generic_stateid(struct nfs4_stateid *stp) -{ - put_nfs4_file(stp->st_file); - kmem_cache_free(stateid_slab, stp); -} - -static void release_lock_stateid(struct nfs4_stateid *stp) -{ - struct file *file; - - unhash_generic_stateid(stp); - file = find_any_file(stp->st_file); - if (file) - locks_remove_posix(file, (fl_owner_t)stp->st_stateowner); - free_generic_stateid(stp); -} - -static void unhash_lockowner(struct nfs4_stateowner *sop) -{ - struct nfs4_stateid *stp; - - list_del(&sop->so_idhash); - list_del(&sop->so_strhash); - list_del(&sop->so_perstateid); - while (!list_empty(&sop->so_stateids)) { - stp = list_first_entry(&sop->so_stateids, - struct nfs4_stateid, st_perstateowner); - release_lock_stateid(stp); - } -} - -static void release_lockowner(struct nfs4_stateowner *sop) -{ - unhash_lockowner(sop); - nfs4_put_stateowner(sop); -} - -static void -release_stateid_lockowners(struct nfs4_stateid *open_stp) -{ - struct nfs4_stateowner *lock_sop; - - while (!list_empty(&open_stp->st_lockowners)) { - lock_sop = list_entry(open_stp->st_lockowners.next, - struct nfs4_stateowner, so_perstateid); - /* list_del(&open_stp->st_lockowners); */ - BUG_ON(lock_sop->so_is_open_owner); - release_lockowner(lock_sop); - } -} - /* * We store the NONE, READ, WRITE, and BOTH bits separately in the * st_{access,deny}_bmap field of the stateid, in order to track not @@ -446,6 +388,64 @@ static int nfs4_access_bmap_to_omode(struct nfs4_stateid *stp) return nfs4_access_to_omode(access); } +static void unhash_generic_stateid(struct nfs4_stateid *stp) +{ + list_del(&stp->st_hash); + list_del(&stp->st_perfile); + list_del(&stp->st_perstateowner); +} + +static void free_generic_stateid(struct nfs4_stateid *stp) +{ + put_nfs4_file(stp->st_file); + kmem_cache_free(stateid_slab, stp); +} + +static void release_lock_stateid(struct nfs4_stateid *stp) +{ + struct file *file; + + unhash_generic_stateid(stp); + file = find_any_file(stp->st_file); + if (file) + locks_remove_posix(file, (fl_owner_t)stp->st_stateowner); + free_generic_stateid(stp); +} + +static void unhash_lockowner(struct nfs4_stateowner *sop) +{ + struct nfs4_stateid *stp; + + list_del(&sop->so_idhash); + list_del(&sop->so_strhash); + list_del(&sop->so_perstateid); + while (!list_empty(&sop->so_stateids)) { + stp = list_first_entry(&sop->so_stateids, + struct nfs4_stateid, st_perstateowner); + release_lock_stateid(stp); + } +} + +static void release_lockowner(struct nfs4_stateowner *sop) +{ + unhash_lockowner(sop); + nfs4_put_stateowner(sop); +} + +static void +release_stateid_lockowners(struct nfs4_stateid *open_stp) +{ + struct nfs4_stateowner *lock_sop; + + while (!list_empty(&open_stp->st_lockowners)) { + lock_sop = list_entry(open_stp->st_lockowners.next, + struct nfs4_stateowner, so_perstateid); + /* list_del(&open_stp->st_lockowners); */ + BUG_ON(lock_sop->so_is_open_owner); + release_lockowner(lock_sop); + } +} + static void release_open_stateid(struct nfs4_stateid *stp) { int oflag = nfs4_access_bmap_to_omode(stp); @@ -3764,7 +3764,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct file_lock conflock; __be32 status = 0; unsigned int strhashval; - unsigned int cmd; int err; dprintk("NFSD: nfsd4_lock: start=%Ld length=%Ld\n", @@ -3851,8 +3850,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, filp = find_readable_file(lock_stp->st_file); } file_lock.fl_type = F_RDLCK; - cmd = F_SETLK; - break; + break; case NFS4_WRITE_LT: case NFS4_WRITEW_LT: if (find_writeable_file(lock_stp->st_file)) { @@ -3860,8 +3858,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, filp = find_writeable_file(lock_stp->st_file); } file_lock.fl_type = F_WRLCK; - cmd = F_SETLK; - break; + break; default: status = nfserr_inval; goto out; @@ -3885,7 +3882,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, * Note: locks.c uses the BKL to protect the inode's lock list. */ - err = vfs_lock_file(filp, cmd, &file_lock, &conflock); + err = vfs_lock_file(filp, F_SETLK, &file_lock, &conflock); switch (-err) { case 0: /* success! */ update_stateid(&lock_stp->st_stateid); -- cgit v1.2.2 From 0997b173609b9229ece28941c118a2a9b278796e Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Wed, 2 Mar 2011 18:01:35 -0500 Subject: nfsd4: fix struct file leak MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make sure we properly reference count the struct files that a lock depends on, and release them when the lock stateid is released. This fixes a major leak of struct files when using locking over nfsv4. Cc: stable@kernel.org Reported-by: Rick Koshi Tested-by: Ivo Přikryl Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) (limited to 'fs/nfsd/nfs4state.c') diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 84d2dd327b2d..c26dc31fb943 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -397,6 +397,9 @@ static void unhash_generic_stateid(struct nfs4_stateid *stp) static void free_generic_stateid(struct nfs4_stateid *stp) { + int oflag = nfs4_access_bmap_to_omode(stp); + + nfs4_file_put_access(stp->st_file, oflag); put_nfs4_file(stp->st_file); kmem_cache_free(stateid_slab, stp); } @@ -448,11 +451,8 @@ release_stateid_lockowners(struct nfs4_stateid *open_stp) static void release_open_stateid(struct nfs4_stateid *stp) { - int oflag = nfs4_access_bmap_to_omode(stp); - unhash_generic_stateid(stp); release_stateid_lockowners(stp); - nfs4_file_put_access(stp->st_file, oflag); free_generic_stateid(stp); } @@ -3734,6 +3734,7 @@ alloc_init_lock_stateid(struct nfs4_stateowner *sop, struct nfs4_file *fp, struc stp->st_stateid.si_stateownerid = sop->so_id; stp->st_stateid.si_fileid = fp->fi_id; stp->st_stateid.si_generation = 0; + stp->st_access_bmap = 0; stp->st_deny_bmap = open_stp->st_deny_bmap; stp->st_openstp = open_stp; @@ -3748,6 +3749,17 @@ check_lock_length(u64 offset, u64 length) LOFF_OVERFLOW(offset, length))); } +static void get_lock_access(struct nfs4_stateid *lock_stp, u32 access) +{ + struct nfs4_file *fp = lock_stp->st_file; + int oflag = nfs4_access_to_omode(access); + + if (test_bit(access, &lock_stp->st_access_bmap)) + return; + nfs4_file_get_access(fp, oflag); + __set_bit(access, &lock_stp->st_access_bmap); +} + /* * LOCK operation */ @@ -3845,18 +3857,16 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, switch (lock->lk_type) { case NFS4_READ_LT: case NFS4_READW_LT: - if (find_readable_file(lock_stp->st_file)) { - nfs4_get_vfs_file(rqstp, fp, &cstate->current_fh, NFS4_SHARE_ACCESS_READ); - filp = find_readable_file(lock_stp->st_file); - } + filp = find_readable_file(lock_stp->st_file); + if (filp) + get_lock_access(lock_stp, NFS4_SHARE_ACCESS_READ); file_lock.fl_type = F_RDLCK; break; case NFS4_WRITE_LT: case NFS4_WRITEW_LT: - if (find_writeable_file(lock_stp->st_file)) { - nfs4_get_vfs_file(rqstp, fp, &cstate->current_fh, NFS4_SHARE_ACCESS_WRITE); - filp = find_writeable_file(lock_stp->st_file); - } + filp = find_writeable_file(lock_stp->st_file); + if (filp) + get_lock_access(lock_stp, NFS4_SHARE_ACCESS_WRITE); file_lock.fl_type = F_WRLCK; break; default: -- cgit v1.2.2 From d2b217439fd1d8f7857175f063113f4d1d66306c Mon Sep 17 00:00:00 2001 From: Mi Jinlong Date: Thu, 10 Mar 2011 17:43:37 +0800 Subject: nfs41: make sure nfs server return right ca_maxresponsesize_cached According to rfc5661, ca_maxresponsesize_cached: Like ca_maxresponsesize, but the maximum size of a reply that will be stored in the reply cache (Section 2.10.6.1). For each channel, the server MAY decrease this value, but MUST NOT increase it. the latest kernel(2.6.38-rc8) may increase the value for ignoring request's ca_maxresponsesize_cached value. We should not ignore it. Signed-off-by: Mi Jinlong Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/nfsd/nfs4state.c') diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index c26dc31fb943..a20827804c50 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -608,7 +608,8 @@ static void init_forechannel_attrs(struct nfsd4_channel_attrs *new, struct nfsd4 u32 maxrpc = nfsd_serv->sv_max_mesg; new->maxreqs = numslots; - new->maxresp_cached = slotsize + NFSD_MIN_HDR_SEQ_SZ; + new->maxresp_cached = min_t(u32, req->maxresp_cached, + slotsize + NFSD_MIN_HDR_SEQ_SZ); new->maxreq_sz = min_t(u32, req->maxreq_sz, maxrpc); new->maxresp_sz = min_t(u32, req->maxresp_sz, maxrpc); new->maxops = min_t(u32, req->maxops, NFSD_MAX_OPS_PER_COMPOUND); -- cgit v1.2.2