diff options
| -rw-r--r-- | fs/nfs/dir.c | 2 | ||||
| -rw-r--r-- | fs/nfs/nfs4proc.c | 53 | ||||
| -rw-r--r-- | include/linux/nfs_fs_sb.h | 1 |
3 files changed, 49 insertions, 7 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index f23f455be42b..e093e73178b7 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1486,6 +1486,8 @@ static int nfs4_lookup_revalidate(struct dentry *dentry, unsigned int flags) goto no_open; if (d_mountpoint(dentry)) goto no_open; + if (NFS_SB(dentry->d_sb)->caps & NFS_CAP_ATOMIC_OPEN_V1) + goto no_open; inode = dentry->d_inode; parent = dget_parent(dentry); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 7bbb06f280fc..732b76f703d6 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -767,6 +767,35 @@ struct nfs4_opendata { int cancelled; }; +static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, + int err, struct nfs4_exception *exception) +{ + if (err != -EINVAL) + return false; + if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) + return false; + server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; + exception->retry = 1; + return true; +} + +static enum open_claim_type4 +nfs4_map_atomic_open_claim(struct nfs_server *server, + enum open_claim_type4 claim) +{ + if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) + return claim; + switch (claim) { + default: + return claim; + case NFS4_OPEN_CLAIM_FH: + return NFS4_OPEN_CLAIM_NULL; + case NFS4_OPEN_CLAIM_DELEG_CUR_FH: + return NFS4_OPEN_CLAIM_DELEGATE_CUR; + case NFS4_OPEN_CLAIM_DELEG_PREV_FH: + return NFS4_OPEN_CLAIM_DELEGATE_PREV; + } +} static void nfs4_init_opendata_res(struct nfs4_opendata *p) { @@ -818,8 +847,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, p->o_arg.server = server; p->o_arg.bitmask = server->attr_bitmask; p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; - p->o_arg.claim = claim; - switch (claim) { + p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); + switch (p->o_arg.claim) { case NFS4_OPEN_CLAIM_NULL: case NFS4_OPEN_CLAIM_DELEGATE_CUR: case NFS4_OPEN_CLAIM_DELEGATE_PREV: @@ -1326,6 +1355,8 @@ static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state int err; do { err = _nfs4_do_open_reclaim(ctx, state); + if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) + continue; if (err != -NFS4ERR_DELAY) break; nfs4_handle_exception(server, err, &exception); @@ -1741,7 +1772,7 @@ static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *s int ret; opendata = nfs4_open_recoverdata_alloc(ctx, state, - NFS4_OPEN_CLAIM_NULL); + NFS4_OPEN_CLAIM_FH); if (IS_ERR(opendata)) return PTR_ERR(opendata); ret = nfs4_open_recover(opendata, state); @@ -1759,6 +1790,8 @@ static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state do { err = _nfs4_open_expired(ctx, state); + if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) + continue; switch (err) { default: goto out; @@ -1926,6 +1959,7 @@ static int _nfs4_do_open(struct inode *dir, struct nfs4_state *state = NULL; struct nfs_server *server = NFS_SERVER(dir); struct nfs4_opendata *opendata; + enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; int status; /* Protect against reboot recovery conflicts */ @@ -1941,9 +1975,10 @@ static int _nfs4_do_open(struct inode *dir, if (dentry->d_inode != NULL) nfs4_return_incompatible_delegation(dentry->d_inode, fmode); status = -ENOMEM; + if (dentry->d_inode) + claim = NFS4_OPEN_CLAIM_FH; opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, - NFS4_OPEN_CLAIM_NULL, - GFP_KERNEL); + claim, GFP_KERNEL); if (opendata == NULL) goto err_put_state_owner; @@ -2001,6 +2036,7 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir, struct rpc_cred *cred, struct nfs4_threshold **ctx_th) { + struct nfs_server *server = NFS_SERVER(dir); struct nfs4_exception exception = { }; struct nfs4_state *res; int status; @@ -2044,7 +2080,9 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir, exception.retry = 1; continue; } - res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), + if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) + continue; + res = ERR_PTR(nfs4_handle_exception(server, status, &exception)); } while (exception.retry); return res; @@ -6858,7 +6896,8 @@ static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | NFS_CAP_ATOMIC_OPEN | NFS_CAP_CHANGE_ATTR | NFS_CAP_POSIX_LOCK - | NFS_CAP_STATEID_NFSV41, + | NFS_CAP_STATEID_NFSV41 + | NFS_CAP_ATOMIC_OPEN_V1, .call_sync = nfs4_call_sync_sequence, .match_stateid = nfs41_match_stateid, .find_root_sec = nfs41_find_root_sec, diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 74c9e52c9338..d8fdfdc7a8fe 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -198,5 +198,6 @@ struct nfs_server { #define NFS_CAP_POSIX_LOCK (1U << 14) #define NFS_CAP_UIDGID_NOMAP (1U << 15) #define NFS_CAP_STATEID_NFSV41 (1U << 16) +#define NFS_CAP_ATOMIC_OPEN_V1 (1U << 17) #endif |