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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-06 11:31:38 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-06 11:31:38 -0800 |
commit | 05c5cb31ec47cacf38db56d9efaa37ca9d473132 (patch) | |
tree | 03f900679819abd8700d5ea93c22e3a59d3af7ca /fs/nfsd | |
parent | 4582a30c2fdca5d2b40f63a20ea082b93230ff2b (diff) | |
parent | 4ea41e2de5bba756858bb40f964e3490b6d1a25c (diff) | |
download | kernel_samsung_smdk4412-05c5cb31ec47cacf38db56d9efaa37ca9d473132.zip kernel_samsung_smdk4412-05c5cb31ec47cacf38db56d9efaa37ca9d473132.tar.gz kernel_samsung_smdk4412-05c5cb31ec47cacf38db56d9efaa37ca9d473132.tar.bz2 |
Merge branch 'for-2.6.34' of git://linux-nfs.org/~bfields/linux
* 'for-2.6.34' of git://linux-nfs.org/~bfields/linux: (22 commits)
nfsd4: fix minor memory leak
svcrpc: treat uid's as unsigned
nfsd: ensure sockets are closed on error
Revert "sunrpc: move the close processing after do recvfrom method"
Revert "sunrpc: fix peername failed on closed listener"
sunrpc: remove unnecessary svc_xprt_put
NFSD: NFSv4 callback client should use RPC_TASK_SOFTCONN
xfs_export_operations.commit_metadata
commit_metadata export operation replacing nfsd_sync_dir
lockd: don't clear sm_monitored on nsm_reboot_lookup
lockd: release reference to nsm_handle in nlm_host_rebooted
nfsd: Use vfs_fsync_range() in nfsd_commit
NFSD: Create PF_INET6 listener in write_ports
SUNRPC: NFS kernel APIs shouldn't return ENOENT for "transport not found"
SUNRPC: Bury "#ifdef IPV6" in svc_create_xprt()
NFSD: Support AF_INET6 in svc_addsock() function
SUNRPC: Use rpc_pton() in ip_map_parse()
nfsd: 4.1 has an rfc number
nfsd41: Create the recovery entry for the NFSv4.1 client
nfsd: use vfs_fsync for non-directories
...
Diffstat (limited to 'fs/nfsd')
-rw-r--r-- | fs/nfsd/nfs4callback.c | 5 | ||||
-rw-r--r-- | fs/nfsd/nfs4recover.c | 4 | ||||
-rw-r--r-- | fs/nfsd/nfs4state.c | 4 | ||||
-rw-r--r-- | fs/nfsd/nfs4xdr.c | 2 | ||||
-rw-r--r-- | fs/nfsd/nfsctl.c | 24 | ||||
-rw-r--r-- | fs/nfsd/vfs.c | 153 |
6 files changed, 100 insertions, 92 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index c6eed2a..4bc22c7 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -525,6 +525,8 @@ static struct rpc_cred *callback_cred; int set_callback_cred(void) { + if (callback_cred) + return 0; callback_cred = rpc_lookup_machine_cred(); if (!callback_cred) return -ENOMEM; @@ -542,7 +544,8 @@ void do_probe_callback(struct nfs4_client *clp) }; int status; - status = rpc_call_async(cb->cb_client, &msg, RPC_TASK_SOFT, + status = rpc_call_async(cb->cb_client, &msg, + RPC_TASK_SOFT | RPC_TASK_SOFTCONN, &nfsd4_cb_probe_ops, (void *)clp); if (status) { warn_no_callback_path(clp, status); diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c index 5a754f7..98fb98e 100644 --- a/fs/nfsd/nfs4recover.c +++ b/fs/nfsd/nfs4recover.c @@ -119,9 +119,7 @@ out_no_tfm: static void nfsd4_sync_rec_dir(void) { - mutex_lock(&rec_dir.dentry->d_inode->i_mutex); - nfsd_sync_dir(rec_dir.dentry); - mutex_unlock(&rec_dir.dentry->d_inode->i_mutex); + vfs_fsync(NULL, rec_dir.dentry, 0); } int diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index fcafe60..c97fddb 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -2482,8 +2482,10 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf } memcpy(&open->op_stateid, &stp->st_stateid, sizeof(stateid_t)); - if (nfsd4_has_session(&resp->cstate)) + if (nfsd4_has_session(&resp->cstate)) { open->op_stateowner->so_confirmed = 1; + nfsd4_create_clid_dir(open->op_stateowner->so_client); + } /* * Attempt to hand out a delegation. No error return, because the diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index bbf72d8..78c7e24 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1434,7 +1434,7 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp) } op->opnum = ntohl(*argp->p++); - if (op->opnum >= OP_ACCESS && op->opnum < ops->nops) + if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) op->status = ops->decoders[op->opnum](argp, &op->u); else { op->opnum = OP_ILLEGAL; diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 2604c3e..0f0e77f 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -988,6 +988,7 @@ static ssize_t __write_ports_delfd(char *buf) static ssize_t __write_ports_addxprt(char *buf) { char transport[16]; + struct svc_xprt *xprt; int port, err; if (sscanf(buf, "%15s %4u", transport, &port) != 2) @@ -1002,13 +1003,24 @@ static ssize_t __write_ports_addxprt(char *buf) err = svc_create_xprt(nfsd_serv, transport, PF_INET, port, SVC_SOCK_ANONYMOUS); - if (err < 0) { - /* Give a reasonable perror msg for bad transport string */ - if (err == -ENOENT) - err = -EPROTONOSUPPORT; - return err; - } + if (err < 0) + goto out_err; + + err = svc_create_xprt(nfsd_serv, transport, + PF_INET6, port, SVC_SOCK_ANONYMOUS); + if (err < 0 && err != -EAFNOSUPPORT) + goto out_close; return 0; +out_close: + xprt = svc_find_xprt(nfsd_serv, transport, PF_INET, port); + if (xprt != NULL) { + svc_close_xprt(xprt); + svc_xprt_put(xprt); + } +out_err: + /* Decrease the count, but don't shut down the service */ + nfsd_serv->sv_nrthreads--; + return err; } /* diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 8eca17d..a11b0e8 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -26,6 +26,8 @@ #include <linux/jhash.h> #include <linux/ima.h> #include <asm/uaccess.h> +#include <linux/exportfs.h> +#include <linux/writeback.h> #ifdef CONFIG_NFSD_V3 #include "xdr3.h" @@ -270,6 +272,32 @@ out: return err; } +/* + * Commit metadata changes to stable storage. + */ +static int +commit_metadata(struct svc_fh *fhp) +{ + struct inode *inode = fhp->fh_dentry->d_inode; + const struct export_operations *export_ops = inode->i_sb->s_export_op; + int error = 0; + + if (!EX_ISSYNC(fhp->fh_export)) + return 0; + + if (export_ops->commit_metadata) { + error = export_ops->commit_metadata(inode); + } else { + struct writeback_control wbc = { + .sync_mode = WB_SYNC_ALL, + .nr_to_write = 0, /* metadata only */ + }; + + error = sync_inode(inode, &wbc); + } + + return error; +} /* * Set various file attributes. @@ -767,43 +795,6 @@ nfsd_close(struct file *filp) } /* - * Sync a file - * As this calls fsync (not fdatasync) there is no need for a write_inode - * after it. - */ -static inline int nfsd_dosync(struct file *filp, struct dentry *dp, - const struct file_operations *fop) -{ - struct inode *inode = dp->d_inode; - int (*fsync) (struct file *, struct dentry *, int); - int err; - - err = filemap_write_and_wait(inode->i_mapping); - if (err == 0 && fop && (fsync = fop->fsync)) - err = fsync(filp, dp, 0); - return err; -} - -static int -nfsd_sync(struct file *filp) -{ - int err; - struct inode *inode = filp->f_path.dentry->d_inode; - dprintk("nfsd: sync file %s\n", filp->f_path.dentry->d_name.name); - mutex_lock(&inode->i_mutex); - err=nfsd_dosync(filp, filp->f_path.dentry, filp->f_op); - mutex_unlock(&inode->i_mutex); - - return err; -} - -int -nfsd_sync_dir(struct dentry *dp) -{ - return nfsd_dosync(NULL, dp, dp->d_inode->i_fop); -} - -/* * Obtain the readahead parameters for the file * specified by (dev, ino). */ @@ -1006,7 +997,7 @@ static int wait_for_concurrent_writes(struct file *file) if (inode->i_state & I_DIRTY) { dprintk("nfsd: write sync %d\n", task_pid_nr(current)); - err = nfsd_sync(file); + err = vfs_fsync(file, file->f_path.dentry, 0); } last_ino = inode->i_ino; last_dev = inode->i_sb->s_dev; @@ -1154,8 +1145,9 @@ out: #ifdef CONFIG_NFSD_V3 /* * Commit all pending writes to stable storage. - * Strictly speaking, we could sync just the indicated file region here, - * but there's currently no way we can ask the VFS to do so. + * + * Note: we only guarantee that data that lies within the range specified + * by the 'offset' and 'count' parameters will be synced. * * Unfortunately we cannot lock the file to make sure we return full WCC * data to the client, as locking happens lower down in the filesystem. @@ -1165,23 +1157,32 @@ nfsd_commit(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t offset, unsigned long count) { struct file *file; - __be32 err; + loff_t end = LLONG_MAX; + __be32 err = nfserr_inval; - if ((u64)count > ~(u64)offset) - return nfserr_inval; + if (offset < 0) + goto out; + if (count != 0) { + end = offset + (loff_t)count - 1; + if (end < offset) + goto out; + } err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_WRITE, &file); if (err) - return err; + goto out; if (EX_ISSYNC(fhp->fh_export)) { - if (file->f_op && file->f_op->fsync) { - err = nfserrno(nfsd_sync(file)); - } else { + int err2 = vfs_fsync_range(file, file->f_path.dentry, + offset, end, 0); + + if (err2 != -EINVAL) + err = nfserrno(err2); + else err = nfserr_notsupp; - } } nfsd_close(file); +out: return err; } #endif /* CONFIG_NFSD_V3 */ @@ -1334,12 +1335,14 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp, goto out_nfserr; } - if (EX_ISSYNC(fhp->fh_export)) { - err = nfserrno(nfsd_sync_dir(dentry)); - write_inode_now(dchild->d_inode, 1); - } + err = nfsd_create_setattr(rqstp, resfhp, iap); - err2 = nfsd_create_setattr(rqstp, resfhp, iap); + /* + * nfsd_setattr already committed the child. Transactional filesystems + * had a chance to commit changes for both parent and child + * simultaneously making the following commit_metadata a noop. + */ + err2 = nfserrno(commit_metadata(fhp)); if (err2) err = err2; mnt_drop_write(fhp->fh_export->ex_path.mnt); @@ -1371,7 +1374,6 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp, struct dentry *dentry, *dchild = NULL; struct inode *dirp; __be32 err; - __be32 err2; int host_err; __u32 v_mtime=0, v_atime=0; @@ -1466,11 +1468,6 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp, if (created) *created = 1; - if (EX_ISSYNC(fhp->fh_export)) { - err = nfserrno(nfsd_sync_dir(dentry)); - /* setattr will sync the child (or not) */ - } - nfsd_check_ignore_resizing(iap); if (createmode == NFS3_CREATE_EXCLUSIVE) { @@ -1485,9 +1482,13 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp, } set_attr: - err2 = nfsd_create_setattr(rqstp, resfhp, iap); - if (err2) - err = err2; + err = nfsd_create_setattr(rqstp, resfhp, iap); + + /* + * nfsd_setattr already committed the child (and possibly also the parent). + */ + if (!err) + err = nfserrno(commit_metadata(fhp)); mnt_drop_write(fhp->fh_export->ex_path.mnt); /* @@ -1602,12 +1603,9 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp, } } else host_err = vfs_symlink(dentry->d_inode, dnew, path); - - if (!host_err) { - if (EX_ISSYNC(fhp->fh_export)) - host_err = nfsd_sync_dir(dentry); - } err = nfserrno(host_err); + if (!err) + err = nfserrno(commit_metadata(fhp)); fh_unlock(fhp); mnt_drop_write(fhp->fh_export->ex_path.mnt); @@ -1669,11 +1667,9 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, } host_err = vfs_link(dold, dirp, dnew); if (!host_err) { - if (EX_ISSYNC(ffhp->fh_export)) { - err = nfserrno(nfsd_sync_dir(ddir)); - write_inode_now(dest, 1); - } - err = 0; + err = nfserrno(commit_metadata(ffhp)); + if (!err) + err = nfserrno(commit_metadata(tfhp)); } else { if (host_err == -EXDEV && rqstp->rq_vers == 2) err = nfserr_acces; @@ -1769,10 +1765,10 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen, goto out_dput_new; host_err = vfs_rename(fdir, odentry, tdir, ndentry); - if (!host_err && EX_ISSYNC(tfhp->fh_export)) { - host_err = nfsd_sync_dir(tdentry); + if (!host_err) { + host_err = commit_metadata(tfhp); if (!host_err) - host_err = nfsd_sync_dir(fdentry); + host_err = commit_metadata(ffhp); } mnt_drop_write(ffhp->fh_export->ex_path.mnt); @@ -1853,12 +1849,9 @@ nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, dput(rdentry); - if (host_err) - goto out_drop; - if (EX_ISSYNC(fhp->fh_export)) - host_err = nfsd_sync_dir(dentry); + if (!host_err) + host_err = commit_metadata(fhp); -out_drop: mnt_drop_write(fhp->fh_export->ex_path.mnt); out_nfserr: err = nfserrno(host_err); |