Commit 27fb8d7b authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  nfs: fix memory leak in nfs_get_sb with CONFIG_NFS_V4
  nfs: fix some issues in nfs41_proc_reclaim_complete()
  NFS: Ensure that nfs_wb_page() waits for Pg_writeback to clear
  NFS: Fix an unstable write data integrity race
  nfs: testing for null instead of ERR_PTR()
  NFS: rsize and wsize settings ignored on v4 mounts
  NFSv4: Don't attempt an atomic open if the file is a mountpoint
  SUNRPC: Fix a bug in rpcauth_prune_expired
parents f80a0ca6 9699eda6
......@@ -966,6 +966,8 @@ static int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, str
static void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *source)
{
target->flags = source->flags;
target->rsize = source->rsize;
target->wsize = source->wsize;
target->acregmin = source->acregmin;
target->acregmax = source->acregmax;
target->acdirmin = source->acdirmin;
......
......@@ -1052,7 +1052,7 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd)
struct inode *dir;
int openflags, ret = 0;
if (!is_atomic_open(nd))
if (!is_atomic_open(nd) || d_mountpoint(dentry))
goto no_open;
parent = dget_parent(dentry);
dir = parent->d_inode;
......
......@@ -5218,9 +5218,12 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
msg.rpc_resp = &calldata->res;
task_setup_data.callback_data = calldata;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
if (IS_ERR(task)) {
status = PTR_ERR(task);
goto out;
}
rpc_put_task(task);
return 0;
out:
dprintk("<-- %s status=%d\n", __func__, status);
return status;
......
......@@ -2187,6 +2187,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
if (data->version == 4) {
error = nfs4_try_mount(flags, dev_name, data, mnt);
kfree(data->client_address);
kfree(data->nfs_server.export_path);
goto out;
}
#endif /* CONFIG_NFS_V4 */
......@@ -2657,7 +2658,7 @@ static void nfs_fix_devname(const struct path *path, struct vfsmount *mnt)
devname = nfs_path(path->mnt->mnt_devname,
path->mnt->mnt_root, path->dentry,
page, PAGE_SIZE);
if (devname == NULL)
if (IS_ERR(devname))
goto out_freepage;
tmp = kstrdup(devname, GFP_KERNEL);
if (tmp == NULL)
......
......@@ -1201,6 +1201,25 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
static int nfs_commit_set_lock(struct nfs_inode *nfsi, int may_wait)
{
if (!test_and_set_bit(NFS_INO_COMMIT, &nfsi->flags))
return 1;
if (may_wait && !out_of_line_wait_on_bit_lock(&nfsi->flags,
NFS_INO_COMMIT, nfs_wait_bit_killable,
TASK_KILLABLE))
return 1;
return 0;
}
static void nfs_commit_clear_lock(struct nfs_inode *nfsi)
{
clear_bit(NFS_INO_COMMIT, &nfsi->flags);
smp_mb__after_clear_bit();
wake_up_bit(&nfsi->flags, NFS_INO_COMMIT);
}
static void nfs_commitdata_release(void *data)
{
struct nfs_write_data *wdata = data;
......@@ -1262,8 +1281,6 @@ static int nfs_commit_rpcsetup(struct list_head *head,
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
if (how & FLUSH_SYNC)
rpc_wait_for_completion_task(task);
rpc_put_task(task);
return 0;
}
......@@ -1294,6 +1311,7 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
BDI_RECLAIMABLE);
nfs_clear_page_tag_locked(req);
}
nfs_commit_clear_lock(NFS_I(inode));
return -ENOMEM;
}
......@@ -1349,6 +1367,7 @@ static void nfs_commit_release(void *calldata)
next:
nfs_clear_page_tag_locked(req);
}
nfs_commit_clear_lock(NFS_I(data->inode));
nfs_commitdata_release(calldata);
}
......@@ -1363,8 +1382,11 @@ static const struct rpc_call_ops nfs_commit_ops = {
static int nfs_commit_inode(struct inode *inode, int how)
{
LIST_HEAD(head);
int res;
int may_wait = how & FLUSH_SYNC;
int res = 0;
if (!nfs_commit_set_lock(NFS_I(inode), may_wait))
goto out;
spin_lock(&inode->i_lock);
res = nfs_scan_commit(inode, &head, 0, 0);
spin_unlock(&inode->i_lock);
......@@ -1372,7 +1394,13 @@ static int nfs_commit_inode(struct inode *inode, int how)
int error = nfs_commit_list(inode, &head, how);
if (error < 0)
return error;
}
if (may_wait)
wait_on_bit(&NFS_I(inode)->flags, NFS_INO_COMMIT,
nfs_wait_bit_killable,
TASK_KILLABLE);
} else
nfs_commit_clear_lock(NFS_I(inode));
out:
return res;
}
......@@ -1444,6 +1472,7 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page)
BUG_ON(!PageLocked(page));
for (;;) {
wait_on_page_writeback(page);
req = nfs_page_find_request(page);
if (req == NULL)
break;
......@@ -1478,30 +1507,18 @@ int nfs_wb_page(struct inode *inode, struct page *page)
.range_start = range_start,
.range_end = range_end,
};
struct nfs_page *req;
int need_commit;
int ret;
while(PagePrivate(page)) {
wait_on_page_writeback(page);
if (clear_page_dirty_for_io(page)) {
ret = nfs_writepage_locked(page, &wbc);
if (ret < 0)
goto out_error;
}
req = nfs_find_and_lock_request(page);
if (!req)
break;
if (IS_ERR(req)) {
ret = PTR_ERR(req);
ret = sync_inode(inode, &wbc);
if (ret < 0)
goto out_error;
}
need_commit = test_bit(PG_CLEAN, &req->wb_flags);
nfs_clear_page_tag_locked(req);
if (need_commit) {
ret = nfs_commit_inode(inode, FLUSH_SYNC);
if (ret < 0)
goto out_error;
}
}
return 0;
out_error:
......
......@@ -209,6 +209,7 @@ struct nfs_inode {
#define NFS_INO_FLUSHING (4) /* inode is flushing out data */
#define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */
#define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */
#define NFS_INO_COMMIT (7) /* inode is committing unstable writes */
static inline struct nfs_inode *NFS_I(const struct inode *inode)
{
......
......@@ -237,7 +237,7 @@ rpcauth_prune_expired(struct list_head *free, int nr_to_scan)
list_for_each_entry_safe(cred, next, &cred_unused, cr_lru) {
/* Enforce a 60 second garbage collection moratorium */
if (time_in_range_open(cred->cr_expire, expired, jiffies) &&
if (time_in_range(cred->cr_expire, expired, jiffies) &&
test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags) != 0)
continue;
......
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