* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (46 commits)
[PATCH] fs: add a sanity check in d_free
[PATCH] i_version: remount support
[patch] vfs: make security_inode_setattr() calling consistent
[patch 1/3] FS_MBCACHE: don't needlessly make it built-in
[PATCH] move executable checking into ->permission()
[PATCH] fs/dcache.c: update comment of d_validate()
[RFC PATCH] touch_mnt_namespace when the mount flags change
[PATCH] reiserfs: add missing llseek method
[PATCH] fix ->llseek for more directories
[PATCH vfs-2.6 6/6] vfs: add LOOKUP_RENAME_TARGET intent
[PATCH vfs-2.6 5/6] vfs: remove LOOKUP_PARENT from non LOOKUP_PARENT lookup
[PATCH vfs-2.6 4/6] vfs: remove unnecessary fsnotify_d_instantiate()
[PATCH vfs-2.6 3/6] vfs: add __d_instantiate() helper
[PATCH vfs-2.6 2/6] vfs: add d_ancestor()
[PATCH vfs-2.6 1/6] vfs: replace parent == dentry->d_parent by IS_ROOT()
[PATCH] get rid of on-stack dentry in udf
[PATCH 2/2] anondev: switch to IDA
[PATCH 1/2] anondev: init IDR statically
[JFFS2] Use d_splice_alias() not d_add() in jffs2_lookup()
[PATCH] Optimise NFS readdir hack slightly.
...
int i;
ext3_xattr_put_super(sb);
- journal_destroy(sbi->s_journal);
+ if (journal_destroy(sbi->s_journal) < 0)
+ ext3_abort(sb, __func__, "Couldn't clean up the journal");
if (!(sb->s_flags & MS_RDONLY)) {
EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
es->s_state = cpu_to_le16(sbi->s_mount_state);
journal_t *journal = EXT3_SB(sb)->s_journal;
journal_lock_updates(journal);
- journal_flush(journal);
+ if (journal_flush(journal) < 0)
+ goto out;
+
lock_super(sb);
if (EXT3_HAS_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER) &&
sb->s_flags & MS_RDONLY) {
ext3_commit_super(sb, es, 1);
}
unlock_super(sb);
+
+out:
journal_unlock_updates(journal);
}
/* Now we set up the journal barrier. */
journal_lock_updates(journal);
- journal_flush(journal);
+
+ /*
+ * We don't want to clear needs_recovery flag when we failed
+ * to flush the journal.
+ */
+ if (journal_flush(journal) < 0)
+ return;
/* Journal blocked and flushed, clear needs_recovery flag. */
EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
* Standard function to be called on quota_on
*/
static int ext3_quota_on(struct super_block *sb, int type, int format_id,
- char *path, int remount)
+ char *name, int remount)
{
int err;
- struct nameidata nd;
+ struct path path;
if (!test_opt(sb, QUOTA))
return -EINVAL;
- /* When remounting, no checks are needed and in fact, path is NULL */
+ /* When remounting, no checks are needed and in fact, name is NULL */
if (remount)
- return vfs_quota_on(sb, type, format_id, path, remount);
+ return vfs_quota_on(sb, type, format_id, name, remount);
- err = path_lookup(path, LOOKUP_FOLLOW, &nd);
+ err = kern_path(name, LOOKUP_FOLLOW, &path);
if (err)
return err;
/* Quotafile not on the same filesystem? */
- if (nd.path.mnt->mnt_sb != sb) {
- path_put(&nd.path);
+ if (path.mnt->mnt_sb != sb) {
+ path_put(&path);
return -EXDEV;
}
/* Journaling quota? */
if (EXT3_SB(sb)->s_qf_names[type]) {
/* Quotafile not of fs root? */
- if (nd.path.dentry->d_parent->d_inode != sb->s_root->d_inode)
+ if (path.dentry->d_parent != sb->s_root)
printk(KERN_WARNING
"EXT3-fs: Quota file not on filesystem root. "
"Journaled quota will not work.\n");
* When we journal data on quota file, we have to flush journal to see
* all updates to the file when we bypass pagecache...
*/
- if (ext3_should_journal_data(nd.path.dentry->d_inode)) {
+ if (ext3_should_journal_data(path.dentry->d_inode)) {
/*
* We don't need to lock updates but journal_flush() could
* otherwise be livelocked...
*/
journal_lock_updates(EXT3_SB(sb)->s_journal);
- journal_flush(EXT3_SB(sb)->s_journal);
+ err = journal_flush(EXT3_SB(sb)->s_journal);
journal_unlock_updates(EXT3_SB(sb)->s_journal);
+ if (err) {
+ path_put(&nd.path);
+ return err;
+ }
}
- err = vfs_quota_on_path(sb, type, format_id, &nd.path);
- path_put(&nd.path);
+ err = vfs_quota_on_path(sb, type, format_id, &path);
+ path_put(&path);
return err;
}
int fsidtype;
char *ep;
struct svc_expkey key;
- struct svc_expkey *ek;
+ struct svc_expkey *ek = NULL;
if (mesg[mlen-1] != '\n')
return -EINVAL;
buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
err = -ENOMEM;
- if (!buf) goto out;
+ if (!buf)
+ goto out;
err = -EINVAL;
if ((len=qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
/* now we want a pathname, or empty meaning NEGATIVE */
err = -EINVAL;
- if ((len=qword_get(&mesg, buf, PAGE_SIZE)) < 0)
+ len = qword_get(&mesg, buf, PAGE_SIZE);
+ if (len < 0)
goto out;
dprintk("Path seems to be <%s>\n", buf);
err = 0;
if (len == 0) {
set_bit(CACHE_NEGATIVE, &key.h.flags);
ek = svc_expkey_update(&key, ek);
- if (ek)
- cache_put(&ek->h, &svc_expkey_cache);
- else err = -ENOMEM;
+ if (!ek)
+ err = -ENOMEM;
} else {
- struct nameidata nd;
- err = path_lookup(buf, 0, &nd);
+ err = kern_path(buf, 0, &key.ek_path);
if (err)
goto out;
dprintk("Found the path %s\n", buf);
- key.ek_path = nd.path;
ek = svc_expkey_update(&key, ek);
- if (ek)
- cache_put(&ek->h, &svc_expkey_cache);
- else
+ if (!ek)
err = -ENOMEM;
- path_put(&nd.path);
+ path_put(&key.ek_path);
}
cache_flush();
out:
+ if (ek)
+ cache_put(&ek->h, &svc_expkey_cache);
if (dom)
auth_domain_put(dom);
kfree(buf);
int len;
int err;
struct auth_domain *dom = NULL;
- struct nameidata nd;
- struct svc_export exp, *expp;
+ struct svc_export exp = {}, *expp;
int an_int;
- nd.path.dentry = NULL;
- exp.ex_pathname = NULL;
-
- /* fs locations */
- exp.ex_fslocs.locations = NULL;
- exp.ex_fslocs.locations_count = 0;
- exp.ex_fslocs.migrated = 0;
-
- exp.ex_uuid = NULL;
-
- /* secinfo */
- exp.ex_nflavors = 0;
-
if (mesg[mlen-1] != '\n')
return -EINVAL;
mesg[mlen-1] = 0;
buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
- err = -ENOMEM;
- if (!buf) goto out;
+ if (!buf)
+ return -ENOMEM;
/* client */
- len = qword_get(&mesg, buf, PAGE_SIZE);
err = -EINVAL;
- if (len <= 0) goto out;
+ len = qword_get(&mesg, buf, PAGE_SIZE);
+ if (len <= 0)
+ goto out;
err = -ENOENT;
dom = auth_domain_find(buf);
/* path */
err = -EINVAL;
- if ((len=qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
- goto out;
- err = path_lookup(buf, 0, &nd);
- if (err) goto out_no_path;
+ if ((len = qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
+ goto out1;
+
+ err = kern_path(buf, 0, &exp.ex_path);
+ if (err)
+ goto out1;
- exp.h.flags = 0;
exp.ex_client = dom;
- exp.ex_path.mnt = nd.path.mnt;
- exp.ex_path.dentry = nd.path.dentry;
- exp.ex_pathname = kstrdup(buf, GFP_KERNEL);
+
err = -ENOMEM;
+ exp.ex_pathname = kstrdup(buf, GFP_KERNEL);
if (!exp.ex_pathname)
- goto out;
+ goto out2;
/* expiry */
err = -EINVAL;
exp.h.expiry_time = get_expiry(&mesg);
if (exp.h.expiry_time == 0)
- goto out;
+ goto out3;
/* flags */
err = get_int(&mesg, &an_int);
err = 0;
set_bit(CACHE_NEGATIVE, &exp.h.flags);
} else {
- if (err || an_int < 0) goto out;
+ if (err || an_int < 0)
+ goto out3;
exp.ex_flags= an_int;
/* anon uid */
err = get_int(&mesg, &an_int);
- if (err) goto out;
+ if (err)
+ goto out3;
exp.ex_anon_uid= an_int;
/* anon gid */
err = get_int(&mesg, &an_int);
- if (err) goto out;
+ if (err)
+ goto out3;
exp.ex_anon_gid= an_int;
/* fsid */
err = get_int(&mesg, &an_int);
- if (err) goto out;
+ if (err)
+ goto out3;
exp.ex_fsid = an_int;
while ((len = qword_get(&mesg, buf, PAGE_SIZE)) > 0) {
*/
break;
if (err)
- goto out;
+ goto out4;
}
- err = check_export(nd.path.dentry->d_inode, exp.ex_flags,
+ err = check_export(exp.ex_path.dentry->d_inode, exp.ex_flags,
exp.ex_uuid);
- if (err) goto out;
+ if (err)
+ goto out4;
}
expp = svc_export_lookup(&exp);
err = -ENOMEM;
else
exp_put(expp);
- out:
+ out4:
nfsd4_fslocs_free(&exp.ex_fslocs);
kfree(exp.ex_uuid);
+ out3:
kfree(exp.ex_pathname);
- if (nd.path.dentry)
- path_put(&nd.path);
- out_no_path:
- if (dom)
- auth_domain_put(dom);
+ out2:
+ path_put(&exp.ex_path);
+ out1:
+ auth_domain_put(dom);
+ out:
kfree(buf);
return err;
}
struct svc_export *exp = NULL;
struct svc_export new;
struct svc_expkey *fsid_key = NULL;
- struct nameidata nd;
+ struct path path;
int err;
/* Consistency check */
/* Look up the dentry */
- err = path_lookup(nxp->ex_path, 0, &nd);
+ err = kern_path(nxp->ex_path, 0, &path);
if (err)
goto out_put_clp;
err = -EINVAL;
- exp = exp_get_by_name(clp, nd.path.mnt, nd.path.dentry, NULL);
+ exp = exp_get_by_name(clp, path.mnt, path.dentry, NULL);
memset(&new, 0, sizeof(new));
if ((nxp->ex_flags & NFSEXP_FSID) &&
(!IS_ERR(fsid_key = exp_get_fsid_key(clp, nxp->ex_dev))) &&
fsid_key->ek_path.mnt &&
- (fsid_key->ek_path.mnt != nd.path.mnt ||
- fsid_key->ek_path.dentry != nd.path.dentry))
+ (fsid_key->ek_path.mnt != path.mnt ||
+ fsid_key->ek_path.dentry != path.dentry))
goto finish;
if (!IS_ERR(exp)) {
goto finish;
}
- err = check_export(nd.path.dentry->d_inode, nxp->ex_flags, NULL);
+ err = check_export(path.dentry->d_inode, nxp->ex_flags, NULL);
if (err) goto finish;
err = -ENOMEM;
if (!new.ex_pathname)
goto finish;
new.ex_client = clp;
- new.ex_path = nd.path;
+ new.ex_path = path;
new.ex_flags = nxp->ex_flags;
new.ex_anon_uid = nxp->ex_anon_uid;
new.ex_anon_gid = nxp->ex_anon_gid;
exp_put(exp);
if (fsid_key && !IS_ERR(fsid_key))
cache_put(&fsid_key->h, &svc_expkey_cache);
- path_put(&nd.path);
+ path_put(&path);
out_put_clp:
auth_domain_put(clp);
out_unlock:
{
struct auth_domain *dom;
svc_export *exp;
- struct nameidata nd;
+ struct path path;
int err;
/* Consistency check */
goto out_unlock;
}
- err = path_lookup(nxp->ex_path, 0, &nd);
+ err = kern_path(nxp->ex_path, 0, &path);
if (err)
goto out_domain;
err = -EINVAL;
- exp = exp_get_by_name(dom, nd.path.mnt, nd.path.dentry, NULL);
- path_put(&nd.path);
+ exp = exp_get_by_name(dom, path.mnt, path.dentry, NULL);
+ path_put(&path);
if (IS_ERR(exp))
goto out_domain;
* since its harder to fool a kernel module than a user space program.
*/
int
- exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize)
+ exp_rootfh(svc_client *clp, char *name, struct knfsd_fh *f, int maxsize)
{
struct svc_export *exp;
- struct nameidata nd;
+ struct path path;
struct inode *inode;
struct svc_fh fh;
int err;
err = -EPERM;
/* NB: we probably ought to check that it's NUL-terminated */
- if (path_lookup(path, 0, &nd)) {
- printk("nfsd: exp_rootfh path not found %s", path);
+ if (kern_path(name, 0, &path)) {
+ printk("nfsd: exp_rootfh path not found %s", name);
return err;
}
- inode = nd.path.dentry->d_inode;
+ inode = path.dentry->d_inode;
dprintk("nfsd: exp_rootfh(%s [%p] %s:%s/%ld)\n",
- path, nd.path.dentry, clp->name,
+ name, path.dentry, clp->name,
inode->i_sb->s_id, inode->i_ino);
- exp = exp_parent(clp, nd.path.mnt, nd.path.dentry, NULL);
+ exp = exp_parent(clp, path.mnt, path.dentry, NULL);
if (IS_ERR(exp)) {
err = PTR_ERR(exp);
goto out;
* fh must be initialized before calling fh_compose
*/
fh_init(&fh, maxsize);
- if (fh_compose(&fh, exp, nd.path.dentry, NULL))
+ if (fh_compose(&fh, exp, path.dentry, NULL))
err = -EINVAL;
else
err = 0;
fh_put(&fh);
exp_put(exp);
out:
- path_put(&nd.path);
+ path_put(&path);
return err;
}
static ssize_t nfsd_getxattr(struct dentry *dentry, char *key, void **buf)
{
ssize_t buflen;
+ ssize_t ret;
buflen = vfs_getxattr(dentry, key, NULL, 0);
if (buflen <= 0)
if (!*buf)
return -ENOMEM;
- return vfs_getxattr(dentry, key, *buf, buflen);
+ ret = vfs_getxattr(dentry, key, *buf, buflen);
+ if (ret < 0)
+ kfree(*buf);
+ return ret;
}
#endif
return err;
}
+ /*
+ * We do this buffering because we must not call back into the file
+ * system's ->lookup() method from the filldir callback. That may well
+ * deadlock a number of file systems.
+ *
+ * This is based heavily on the implementation of same in XFS.
+ */
+ struct buffered_dirent {
+ u64 ino;
+ loff_t offset;
+ int namlen;
+ unsigned int d_type;
+ char name[];
+ };
+
+ struct readdir_data {
+ char *dirent;
+ size_t used;
+ int full;
+ };
+
+ static int nfsd_buffered_filldir(void *__buf, const char *name, int namlen,
+ loff_t offset, u64 ino, unsigned int d_type)
+ {
+ struct readdir_data *buf = __buf;
+ struct buffered_dirent *de = (void *)(buf->dirent + buf->used);
+ unsigned int reclen;
+
+ reclen = ALIGN(sizeof(struct buffered_dirent) + namlen, sizeof(u64));
+ if (buf->used + reclen > PAGE_SIZE) {
+ buf->full = 1;
+ return -EINVAL;
+ }
+
+ de->namlen = namlen;
+ de->offset = offset;
+ de->ino = ino;
+ de->d_type = d_type;
+ memcpy(de->name, name, namlen);
+ buf->used += reclen;
+
+ return 0;
+ }
+
+ static int nfsd_buffered_readdir(struct file *file, filldir_t func,
+ struct readdir_cd *cdp, loff_t *offsetp)
+ {
+ struct readdir_data buf;
+ struct buffered_dirent *de;
+ int host_err;
+ int size;
+ loff_t offset;
+
+ buf.dirent = (void *)__get_free_page(GFP_KERNEL);
+ if (!buf.dirent)
+ return -ENOMEM;
+
+ offset = *offsetp;
+ cdp->err = nfserr_eof; /* will be cleared on successful read */
+
+ while (1) {
+ unsigned int reclen;
+
+ buf.used = 0;
+ buf.full = 0;
+
+ host_err = vfs_readdir(file, nfsd_buffered_filldir, &buf);
+ if (buf.full)
+ host_err = 0;
+
+ if (host_err < 0)
+ break;
+
+ size = buf.used;
+
+ if (!size)
+ break;
+
+ de = (struct buffered_dirent *)buf.dirent;
+ while (size > 0) {
+ offset = de->offset;
+
+ if (func(cdp, de->name, de->namlen, de->offset,
+ de->ino, de->d_type))
+ goto done;
+
+ if (cdp->err != nfs_ok)
+ goto done;
+
+ reclen = ALIGN(sizeof(*de) + de->namlen,
+ sizeof(u64));
+ size -= reclen;
+ de = (struct buffered_dirent *)((char *)de + reclen);
+ }
+ offset = vfs_llseek(file, 0, SEEK_CUR);
+ if (!buf.full)
+ break;
+ }
+
+ done:
+ free_page((unsigned long)(buf.dirent));
+
+ if (host_err)
+ return nfserrno(host_err);
+
+ *offsetp = offset;
+ return cdp->err;
+ }
+
/*
* Read entries from a directory.
* The NFSv3/4 verifier we ignore for now.
struct readdir_cd *cdp, filldir_t func)
{
__be32 err;
- int host_err;
struct file *file;
loff_t offset = *offsetp;
goto out_close;
}
- /*
- * Read the directory entries. This silly loop is necessary because
- * readdir() is not guaranteed to fill up the entire buffer, but
- * may choose to do less.
- */
-
- do {
- cdp->err = nfserr_eof; /* will be cleared on successful read */
- host_err = vfs_readdir(file, func, cdp);
- } while (host_err >=0 && cdp->err == nfs_ok);
- if (host_err)
- err = nfserrno(host_err);
- else
- err = cdp->err;
- *offsetp = vfs_llseek(file, 0, 1);
+ err = nfsd_buffered_readdir(file, func, cdp, offsetp);
if (err == nfserr_eof || err == nfserr_toosmall)
err = nfs_ok; /* can still be found in ->err */
#include <linux/key.h>
#include <linux/unwind.h>
#include <linux/buffer_head.h>
+#include <linux/page_cgroup.h>
#include <linux/debug_locks.h>
#include <linux/debugobjects.h>
#include <linux/lockdep.h>
vmalloc_init();
vfs_caches_init_early();
cpuset_init_early();
+ page_cgroup_init();
mem_init();
enable_debug_pagealloc();
cpu_hotplug_init();
fork_init(num_physpages);
proc_caches_init();
buffer_init();
- unnamed_dev_init();
key_init();
security_init();
vfs_caches_init(num_physpages);
}
static int initcall_debug;
-
-static int __init initcall_debug_setup(char *str)
-{
- initcall_debug = 1;
- return 1;
-}
-__setup("initcall_debug", initcall_debug_setup);
+core_param(initcall_debug, initcall_debug, bool, 0644);
int do_one_initcall(initcall_t fn)
{
static void __init do_basic_setup(void)
{
rcu_init_sched(); /* needed by module_init stage. */
- /* drivers will send hotplug events */
- init_workqueues();
usermodehelper_init();
driver_init();
init_irq_proc();
cad_pid = task_pid(current);
+ init_workqueues();
+
smp_prepare_cpus(setup_max_cpus);
do_pre_smp_initcalls();
projects / linux-2.6-omap-h63xx.git / commitdiff