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NFS: nfs4_bitmask_adjust() must not change the server global bitmasks
As currently set, the calls to nfs4_bitmask_adjust() will end up
overwriting the contents of the nfs_server cache_consistency_bitmask
field.
The intention here should be to modify a private copy of that mask in
the close/delegreturn/write arguments.
Fixes: 76bd5c016e ("NFSv4: make cache consistency bitmask dynamic")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust
parent
beab450d8e
commit
332d1a0373
@ -108,9 +108,10 @@ static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *,
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static int nfs41_free_stateid(struct nfs_server *, const nfs4_stateid *,
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const struct cred *, bool);
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#endif
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static void nfs4_bitmask_adjust(__u32 *bitmask, struct inode *inode,
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struct nfs_server *server,
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struct nfs4_label *label);
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static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ],
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const __u32 *src, struct inode *inode,
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struct nfs_server *server,
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struct nfs4_label *label);
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#ifdef CONFIG_NFS_V4_SECURITY_LABEL
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static inline struct nfs4_label *
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@ -3591,6 +3592,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
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struct nfs4_closedata *calldata = data;
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struct nfs4_state *state = calldata->state;
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struct inode *inode = calldata->inode;
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struct nfs_server *server = NFS_SERVER(inode);
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struct pnfs_layout_hdr *lo;
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bool is_rdonly, is_wronly, is_rdwr;
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int call_close = 0;
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@ -3647,8 +3649,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
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if (calldata->arg.fmode == 0 || calldata->arg.fmode == FMODE_READ) {
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/* Close-to-open cache consistency revalidation */
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if (!nfs4_have_delegation(inode, FMODE_READ)) {
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calldata->arg.bitmask = NFS_SERVER(inode)->cache_consistency_bitmask;
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nfs4_bitmask_adjust(calldata->arg.bitmask, inode, NFS_SERVER(inode), NULL);
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nfs4_bitmask_set(calldata->arg.bitmask_store,
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server->cache_consistency_bitmask,
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inode, server, NULL);
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calldata->arg.bitmask = calldata->arg.bitmask_store;
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} else
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calldata->arg.bitmask = NULL;
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}
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@ -5416,19 +5420,17 @@ bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr)
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return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0;
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}
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static void nfs4_bitmask_adjust(__u32 *bitmask, struct inode *inode,
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struct nfs_server *server,
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struct nfs4_label *label)
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static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], const __u32 *src,
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struct inode *inode, struct nfs_server *server,
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struct nfs4_label *label)
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{
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unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
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unsigned int i;
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if ((cache_validity & NFS_INO_INVALID_DATA) ||
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(cache_validity & NFS_INO_REVAL_PAGECACHE) ||
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(cache_validity & NFS_INO_REVAL_FORCED) ||
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(cache_validity & NFS_INO_INVALID_OTHER))
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nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, label), inode);
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memcpy(bitmask, src, sizeof(*bitmask) * NFS4_BITMASK_SZ);
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if (cache_validity & (NFS_INO_INVALID_CHANGE | NFS_INO_REVAL_PAGECACHE))
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bitmask[0] |= FATTR4_WORD0_CHANGE;
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if (cache_validity & NFS_INO_INVALID_ATIME)
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bitmask[1] |= FATTR4_WORD1_TIME_ACCESS;
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if (cache_validity & NFS_INO_INVALID_OTHER)
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@ -5437,16 +5439,22 @@ static void nfs4_bitmask_adjust(__u32 *bitmask, struct inode *inode,
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FATTR4_WORD1_NUMLINKS;
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if (label && label->len && cache_validity & NFS_INO_INVALID_LABEL)
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bitmask[2] |= FATTR4_WORD2_SECURITY_LABEL;
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if (cache_validity & NFS_INO_INVALID_CHANGE)
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bitmask[0] |= FATTR4_WORD0_CHANGE;
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if (cache_validity & NFS_INO_INVALID_CTIME)
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bitmask[1] |= FATTR4_WORD1_TIME_METADATA;
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if (cache_validity & NFS_INO_INVALID_MTIME)
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bitmask[1] |= FATTR4_WORD1_TIME_MODIFY;
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if (cache_validity & NFS_INO_INVALID_SIZE)
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bitmask[0] |= FATTR4_WORD0_SIZE;
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if (cache_validity & NFS_INO_INVALID_BLOCKS)
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bitmask[1] |= FATTR4_WORD1_SPACE_USED;
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if (nfs4_have_delegation(inode, FMODE_READ) &&
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!(cache_validity & NFS_INO_REVAL_FORCED))
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bitmask[0] &= ~FATTR4_WORD0_SIZE;
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else if (cache_validity &
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(NFS_INO_INVALID_SIZE | NFS_INO_REVAL_PAGECACHE))
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bitmask[0] |= FATTR4_WORD0_SIZE;
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for (i = 0; i < NFS4_BITMASK_SZ; i++)
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bitmask[i] &= server->attr_bitmask[i];
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}
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static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr,
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@ -5459,8 +5467,10 @@ static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr,
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hdr->args.bitmask = NULL;
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hdr->res.fattr = NULL;
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} else {
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hdr->args.bitmask = server->cache_consistency_bitmask;
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nfs4_bitmask_adjust(hdr->args.bitmask, hdr->inode, server, NULL);
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nfs4_bitmask_set(hdr->args.bitmask_store,
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server->cache_consistency_bitmask,
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hdr->inode, server, NULL);
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hdr->args.bitmask = hdr->args.bitmask_store;
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}
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if (!hdr->pgio_done_cb)
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@ -6502,8 +6512,10 @@ static int _nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred,
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data->args.fhandle = &data->fh;
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data->args.stateid = &data->stateid;
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data->args.bitmask = server->cache_consistency_bitmask;
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nfs4_bitmask_adjust(data->args.bitmask, inode, server, NULL);
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nfs4_bitmask_set(data->args.bitmask_store,
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server->cache_consistency_bitmask, inode, server,
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NULL);
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data->args.bitmask = data->args.bitmask_store;
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nfs_copy_fh(&data->fh, NFS_FH(inode));
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nfs4_stateid_copy(&data->stateid, stateid);
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data->res.fattr = &data->fattr;
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@ -15,6 +15,8 @@
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#define NFS_DEF_FILE_IO_SIZE (4096U)
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#define NFS_MIN_FILE_IO_SIZE (1024U)
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#define NFS_BITMASK_SZ 3
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struct nfs4_string {
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unsigned int len;
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char *data;
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@ -525,7 +527,8 @@ struct nfs_closeargs {
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struct nfs_seqid * seqid;
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fmode_t fmode;
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u32 share_access;
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u32 * bitmask;
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const u32 * bitmask;
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u32 bitmask_store[NFS_BITMASK_SZ];
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struct nfs4_layoutreturn_args *lr_args;
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};
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@ -608,7 +611,8 @@ struct nfs4_delegreturnargs {
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struct nfs4_sequence_args seq_args;
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const struct nfs_fh *fhandle;
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const nfs4_stateid *stateid;
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u32 * bitmask;
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const u32 *bitmask;
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u32 bitmask_store[NFS_BITMASK_SZ];
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struct nfs4_layoutreturn_args *lr_args;
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};
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@ -648,7 +652,8 @@ struct nfs_pgio_args {
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union {
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unsigned int replen; /* used by read */
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struct {
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u32 * bitmask; /* used by write */
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const u32 * bitmask; /* used by write */
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u32 bitmask_store[NFS_BITMASK_SZ]; /* used by write */
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enum nfs3_stable_how stable; /* used by write */
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};
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};
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