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-rw-r--r--fs/afs/cell.c15
-rw-r--r--fs/afs/internal.h1
-rw-r--r--fs/afs/mntpt.c8
-rw-r--r--fs/afs/super.c1
-rw-r--r--fs/buffer.c13
-rw-r--r--fs/cifs/cifs_dfs_ref.c1
-rw-r--r--fs/cifs/cifsacl.c4
-rw-r--r--fs/jbd/journal.c4
-rw-r--r--fs/jbd/revoke.c4
-rw-r--r--fs/jbd2/journal.c12
-rw-r--r--fs/jbd2/revoke.c4
-rw-r--r--fs/namespace.c200
-rw-r--r--fs/nfs/super.c2
-rw-r--r--fs/pnode.c2
-rw-r--r--fs/reiserfs/do_balan.c8
-rw-r--r--fs/reiserfs/fix_node.c8
-rw-r--r--fs/reiserfs/lbalance.c2
-rw-r--r--fs/reiserfs/namei.c2
-rw-r--r--fs/smbfs/smbiod.c2
19 files changed, 115 insertions, 178 deletions
diff --git a/fs/afs/cell.c b/fs/afs/cell.c
index 970d38f30565..788865df1bc9 100644
--- a/fs/afs/cell.c
+++ b/fs/afs/cell.c
@@ -127,14 +127,20 @@ struct afs_cell *afs_cell_create(const char *name, char *vllist)
_enter("%s,%s", name, vllist);
+ down_write(&afs_cells_sem);
+ read_lock(&afs_cells_lock);
+ list_for_each_entry(cell, &afs_cells, link) {
+ if (strcasecmp(cell->name, name) == 0)
+ goto duplicate_name;
+ }
+ read_unlock(&afs_cells_lock);
+
cell = afs_cell_alloc(name, vllist);
if (IS_ERR(cell)) {
_leave(" = %ld", PTR_ERR(cell));
return cell;
}
- down_write(&afs_cells_sem);
-
/* add a proc directory for this cell */
ret = afs_proc_cell_setup(cell);
if (ret < 0)
@@ -167,6 +173,11 @@ error:
kfree(cell);
_leave(" = %d", ret);
return ERR_PTR(ret);
+
+duplicate_name:
+ read_unlock(&afs_cells_lock);
+ up_write(&afs_cells_sem);
+ return ERR_PTR(-EEXIST);
}
/*
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 5ca3625cd39e..9ba16edc0af2 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -573,7 +573,6 @@ extern const struct file_operations afs_mntpt_file_operations;
extern int afs_mntpt_check_symlink(struct afs_vnode *, struct key *);
extern void afs_mntpt_kill_timer(void);
-extern void afs_umount_begin(struct vfsmount *, int);
/*
* proc.c
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index a3510b8ba3e7..2f5503902c37 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -283,11 +283,3 @@ void afs_mntpt_kill_timer(void)
cancel_delayed_work(&afs_mntpt_expiry_timer);
flush_scheduled_work();
}
-
-/*
- * begin unmount by attempting to remove all automounted mountpoints we added
- */
-void afs_umount_begin(struct vfsmount *vfsmnt, int flags)
-{
- shrink_submounts(vfsmnt, &afs_vfsmounts);
-}
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 36bbce45f44b..4b572b801d8d 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -50,7 +50,6 @@ static const struct super_operations afs_super_ops = {
.write_inode = afs_write_inode,
.destroy_inode = afs_destroy_inode,
.clear_inode = afs_clear_inode,
- .umount_begin = afs_umount_begin,
.put_super = afs_put_super,
.show_options = generic_show_options,
};
diff --git a/fs/buffer.c b/fs/buffer.c
index 7ba58386beee..98196327ddf0 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2564,14 +2564,13 @@ int nobh_write_end(struct file *file, struct address_space *mapping,
struct inode *inode = page->mapping->host;
struct buffer_head *head = fsdata;
struct buffer_head *bh;
+ BUG_ON(fsdata != NULL && page_has_buffers(page));
- if (!PageMappedToDisk(page)) {
- if (unlikely(copied < len) && !page_has_buffers(page))
- attach_nobh_buffers(page, head);
- if (page_has_buffers(page))
- return generic_write_end(file, mapping, pos, len,
- copied, page, fsdata);
- }
+ if (unlikely(copied < len) && !page_has_buffers(page))
+ attach_nobh_buffers(page, head);
+ if (page_has_buffers(page))
+ return generic_write_end(file, mapping, pos, len,
+ copied, page, fsdata);
SetPageUptodate(page);
set_page_dirty(page);
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index a1a95b027136..56c924033b78 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -33,7 +33,6 @@ void dfs_shrink_umount_helper(struct vfsmount *vfsmnt)
{
mark_mounts_for_expiry(&cifs_dfs_automount_list);
mark_mounts_for_expiry(&cifs_dfs_automount_list);
- shrink_submounts(vfsmnt, &cifs_dfs_automount_list);
}
/**
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 1f5a4289b848..1cb5b0a9f2ac 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -261,7 +261,7 @@ static void mode_to_access_flags(umode_t mode, umode_t bits_to_use,
return;
}
-static __le16 fill_ace_for_sid(struct cifs_ace *pntace,
+static __u16 fill_ace_for_sid(struct cifs_ace *pntace,
const struct cifs_sid *psid, __u64 nmode, umode_t bits)
{
int i;
@@ -411,7 +411,7 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
static int set_chmod_dacl(struct cifs_acl *pndacl, struct cifs_sid *pownersid,
struct cifs_sid *pgrpsid, __u64 nmode)
{
- __le16 size = 0;
+ u16 size = 0;
struct cifs_acl *pnndacl;
pnndacl = (struct cifs_acl *)((char *)pndacl + sizeof(struct cifs_acl));
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index 9816293442ab..0e081d5f32e8 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -1620,14 +1620,14 @@ static int journal_init_journal_head_cache(void)
{
int retval;
- J_ASSERT(journal_head_cache == 0);
+ J_ASSERT(journal_head_cache == NULL);
journal_head_cache = kmem_cache_create("journal_head",
sizeof(struct journal_head),
0, /* offset */
SLAB_TEMPORARY, /* flags */
NULL); /* ctor */
retval = 0;
- if (journal_head_cache == 0) {
+ if (!journal_head_cache) {
retval = -ENOMEM;
printk(KERN_EMERG "JBD: no memory for journal_head cache\n");
}
diff --git a/fs/jbd/revoke.c b/fs/jbd/revoke.c
index ad2eacf570c6..d5f8eee7c88c 100644
--- a/fs/jbd/revoke.c
+++ b/fs/jbd/revoke.c
@@ -173,13 +173,13 @@ int __init journal_init_revoke_caches(void)
0,
SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY,
NULL);
- if (revoke_record_cache == 0)
+ if (!revoke_record_cache)
return -ENOMEM;
revoke_table_cache = kmem_cache_create("revoke_table",
sizeof(struct jbd_revoke_table_s),
0, SLAB_TEMPORARY, NULL);
- if (revoke_table_cache == 0) {
+ if (!revoke_table_cache) {
kmem_cache_destroy(revoke_record_cache);
revoke_record_cache = NULL;
return -ENOMEM;
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 96ba846992e9..954cff001df6 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -219,7 +219,7 @@ static int jbd2_journal_start_thread(journal_t *journal)
if (IS_ERR(t))
return PTR_ERR(t);
- wait_event(journal->j_wait_done_commit, journal->j_task != 0);
+ wait_event(journal->j_wait_done_commit, journal->j_task != NULL);
return 0;
}
@@ -231,7 +231,7 @@ static void journal_kill_thread(journal_t *journal)
while (journal->j_task) {
wake_up(&journal->j_wait_commit);
spin_unlock(&journal->j_state_lock);
- wait_event(journal->j_wait_done_commit, journal->j_task == 0);
+ wait_event(journal->j_wait_done_commit, journal->j_task == NULL);
spin_lock(&journal->j_state_lock);
}
spin_unlock(&journal->j_state_lock);
@@ -1969,14 +1969,14 @@ static int journal_init_jbd2_journal_head_cache(void)
{
int retval;
- J_ASSERT(jbd2_journal_head_cache == 0);
+ J_ASSERT(jbd2_journal_head_cache == NULL);
jbd2_journal_head_cache = kmem_cache_create("jbd2_journal_head",
sizeof(struct journal_head),
0, /* offset */
SLAB_TEMPORARY, /* flags */
NULL); /* ctor */
retval = 0;
- if (jbd2_journal_head_cache == 0) {
+ if (!jbd2_journal_head_cache) {
retval = -ENOMEM;
printk(KERN_EMERG "JBD: no memory for journal_head cache\n");
}
@@ -2002,14 +2002,14 @@ static struct journal_head *journal_alloc_journal_head(void)
atomic_inc(&nr_journal_heads);
#endif
ret = kmem_cache_alloc(jbd2_journal_head_cache, GFP_NOFS);
- if (ret == 0) {
+ if (!ret) {
jbd_debug(1, "out of memory for journal_head\n");
if (time_after(jiffies, last_warning + 5*HZ)) {
printk(KERN_NOTICE "ENOMEM in %s, retrying.\n",
__FUNCTION__);
last_warning = jiffies;
}
- while (ret == 0) {
+ while (!ret) {
yield();
ret = kmem_cache_alloc(jbd2_journal_head_cache, GFP_NOFS);
}
diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c
index df36f42e19e1..2e1453a5e998 100644
--- a/fs/jbd2/revoke.c
+++ b/fs/jbd2/revoke.c
@@ -174,13 +174,13 @@ int __init jbd2_journal_init_revoke_caches(void)
0,
SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY,
NULL);
- if (jbd2_revoke_record_cache == 0)
+ if (!jbd2_revoke_record_cache)
return -ENOMEM;
jbd2_revoke_table_cache = kmem_cache_create("jbd2_revoke_table",
sizeof(struct jbd2_revoke_table_s),
0, SLAB_TEMPORARY, NULL);
- if (jbd2_revoke_table_cache == 0) {
+ if (!jbd2_revoke_table_cache) {
kmem_cache_destroy(jbd2_revoke_record_cache);
jbd2_revoke_record_cache = NULL;
return -ENOMEM;
diff --git a/fs/namespace.c b/fs/namespace.c
index 7953c96a2071..94f026ec990a 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -155,15 +155,15 @@ static void __touch_mnt_namespace(struct mnt_namespace *ns)
}
}
-static void detach_mnt(struct vfsmount *mnt, struct nameidata *old_nd)
+static void detach_mnt(struct vfsmount *mnt, struct path *old_path)
{
- old_nd->path.dentry = mnt->mnt_mountpoint;
- old_nd->path.mnt = mnt->mnt_parent;
+ old_path->dentry = mnt->mnt_mountpoint;
+ old_path->mnt = mnt->mnt_parent;
mnt->mnt_parent = mnt;
mnt->mnt_mountpoint = mnt->mnt_root;
list_del_init(&mnt->mnt_child);
list_del_init(&mnt->mnt_hash);
- old_nd->path.dentry->d_mounted--;
+ old_path->dentry->d_mounted--;
}
void mnt_set_mountpoint(struct vfsmount *mnt, struct dentry *dentry,
@@ -174,12 +174,12 @@ void mnt_set_mountpoint(struct vfsmount *mnt, struct dentry *dentry,
dentry->d_mounted++;
}
-static void attach_mnt(struct vfsmount *mnt, struct nameidata *nd)
+static void attach_mnt(struct vfsmount *mnt, struct path *path)
{
- mnt_set_mountpoint(nd->path.mnt, nd->path.dentry, mnt);
+ mnt_set_mountpoint(path->mnt, path->dentry, mnt);
list_add_tail(&mnt->mnt_hash, mount_hashtable +
- hash(nd->path.mnt, nd->path.dentry));
- list_add_tail(&mnt->mnt_child, &nd->path.mnt->mnt_mounts);
+ hash(path->mnt, path->dentry));
+ list_add_tail(&mnt->mnt_child, &path->mnt->mnt_mounts);
}
/*
@@ -262,10 +262,8 @@ static struct vfsmount *clone_mnt(struct vfsmount *old, struct dentry *root,
/* stick the duplicate mount on the same expiry list
* as the original if that was on one */
if (flag & CL_EXPIRE) {
- spin_lock(&vfsmount_lock);
if (!list_empty(&old->mnt_expire))
list_add(&mnt->mnt_expire, &old->mnt_expire);
- spin_unlock(&vfsmount_lock);
}
}
return mnt;
@@ -548,6 +546,7 @@ void release_mounts(struct list_head *head)
m = mnt->mnt_parent;
mnt->mnt_mountpoint = mnt->mnt_root;
mnt->mnt_parent = mnt;
+ m->mnt_ghosts--;
spin_unlock(&vfsmount_lock);
dput(dentry);
mntput(m);
@@ -572,12 +571,16 @@ void umount_tree(struct vfsmount *mnt, int propagate, struct list_head *kill)
__touch_mnt_namespace(p->mnt_ns);
p->mnt_ns = NULL;
list_del_init(&p->mnt_child);
- if (p->mnt_parent != p)
+ if (p->mnt_parent != p) {
+ p->mnt_parent->mnt_ghosts++;
p->mnt_mountpoint->d_mounted--;
+ }
change_mnt_propagation(p, MS_PRIVATE);
}
}
+static void shrink_submounts(struct vfsmount *mnt, struct list_head *umounts);
+
static int do_umount(struct vfsmount *mnt, int flags)
{
struct super_block *sb = mnt->mnt_sb;
@@ -650,6 +653,9 @@ static int do_umount(struct vfsmount *mnt, int flags)
spin_lock(&vfsmount_lock);
event++;
+ if (!(flags & MNT_DETACH))
+ shrink_submounts(mnt, &umount_list);
+
retval = -EBUSY;
if (flags & MNT_DETACH || !propagate_mount_busy(mnt, 2)) {
if (!list_empty(&mnt->mnt_list))
@@ -744,7 +750,7 @@ struct vfsmount *copy_tree(struct vfsmount *mnt, struct dentry *dentry,
int flag)
{
struct vfsmount *res, *p, *q, *r, *s;
- struct nameidata nd;
+ struct path path;
if (!(flag & CL_COPY_ALL) && IS_MNT_UNBINDABLE(mnt))
return NULL;
@@ -769,14 +775,14 @@ struct vfsmount *copy_tree(struct vfsmount *mnt, struct dentry *dentry,
q = q->mnt_parent;
}
p = s;
- nd.path.mnt = q;
- nd.path.dentry = p->mnt_mountpoint;
+ path.mnt = q;
+ path.dentry = p->mnt_mountpoint;
q = clone_mnt(p, p->mnt_root, flag);
if (!q)
goto Enomem;
spin_lock(&vfsmount_lock);
list_add_tail(&q->mnt_list, &res->mnt_list);
- attach_mnt(q, &nd);
+ attach_mnt(q, &path);
spin_unlock(&vfsmount_lock);
}
}
@@ -876,11 +882,11 @@ void drop_collected_mounts(struct vfsmount *mnt)
* in allocations.
*/
static int attach_recursive_mnt(struct vfsmount *source_mnt,
- struct nameidata *nd, struct nameidata *parent_nd)
+ struct path *path, struct path *parent_path)
{
LIST_HEAD(tree_list);
- struct vfsmount *dest_mnt = nd->path.mnt;
- struct dentry *dest_dentry = nd->path.dentry;
+ struct vfsmount *dest_mnt = path->mnt;
+ struct dentry *dest_dentry = path->dentry;
struct vfsmount *child, *p;
if (propagate_mnt(dest_mnt, dest_dentry, source_mnt, &tree_list))
@@ -892,9 +898,9 @@ static int attach_recursive_mnt(struct vfsmount *source_mnt,
}
spin_lock(&vfsmount_lock);
- if (parent_nd) {
- detach_mnt(source_mnt, parent_nd);
- attach_mnt(source_mnt, nd);
+ if (parent_path) {
+ detach_mnt(source_mnt, parent_path);
+ attach_mnt(source_mnt, path);
touch_mnt_namespace(current->nsproxy->mnt_ns);
} else {
mnt_set_mountpoint(dest_mnt, dest_dentry, source_mnt);
@@ -930,7 +936,7 @@ static int graft_tree(struct vfsmount *mnt, struct nameidata *nd)
err = -ENOENT;
if (IS_ROOT(nd->path.dentry) || !d_unhashed(nd->path.dentry))
- err = attach_recursive_mnt(mnt, nd, NULL);
+ err = attach_recursive_mnt(mnt, &nd->path, NULL);
out_unlock:
mutex_unlock(&nd->path.dentry->d_inode->i_mutex);
if (!err)
@@ -1059,7 +1065,8 @@ static inline int tree_contains_unbindable(struct vfsmount *mnt)
*/
static noinline int do_move_mount(struct nameidata *nd, char *old_name)
{
- struct nameidata old_nd, parent_nd;
+ struct nameidata old_nd;
+ struct path parent_path;
struct vfsmount *p;
int err = 0;
if (!capable(CAP_SYS_ADMIN))
@@ -1114,21 +1121,19 @@ static noinline int do_move_mount(struct nameidata *nd, char *old_name)
if (p == old_nd.path.mnt)
goto out1;
- err = attach_recursive_mnt(old_nd.path.mnt, nd, &parent_nd);
+ err = attach_recursive_mnt(old_nd.path.mnt, &nd->path, &parent_path);
if (err)
goto out1;
- spin_lock(&vfsmount_lock);
/* if the mount is moved, it should no longer be expire
* automatically */
list_del_init(&old_nd.path.mnt->mnt_expire);
- spin_unlock(&vfsmount_lock);
out1:
mutex_unlock(&nd->path.dentry->d_inode->i_mutex);
out:
up_write(&namespace_sem);
if (!err)
- path_put(&parent_nd.path);
+ path_put(&parent_path);
path_put(&old_nd.path);
return err;
}
@@ -1189,12 +1194,9 @@ int do_add_mount(struct vfsmount *newmnt, struct nameidata *nd,
if ((err = graft_tree(newmnt, nd)))
goto unlock;
- if (fslist) {
- /* add to the specified expiration list */
- spin_lock(&vfsmount_lock);
+ if (fslist) /* add to the specified expiration list */
list_add_tail(&newmnt->mnt_expire, fslist);
- spin_unlock(&vfsmount_lock);
- }
+
up_write(&namespace_sem);
return 0;
@@ -1206,75 +1208,6 @@ unlock:
EXPORT_SYMBOL_GPL(do_add_mount);
-static void expire_mount(struct vfsmount *mnt, struct list_head *mounts,
- struct list_head *umounts)
-{
- spin_lock(&vfsmount_lock);
-
- /*
- * Check if mount is still attached, if not, let whoever holds it deal
- * with the sucker
- */
- if (mnt->mnt_parent == mnt) {
- spin_unlock(&vfsmount_lock);
- return;
- }
-
- /*
- * Check that it is still dead: the count should now be 2 - as
- * contributed by the vfsmount parent and the mntget above
- */
- if (!propagate_mount_busy(mnt, 2)) {
- /* delete from the namespace */
- touch_mnt_namespace(mnt->mnt_ns);
- list_del_init(&mnt->mnt_list);
- mnt->mnt_ns = NULL;
- umount_tree(mnt, 1, umounts);
- spin_unlock(&vfsmount_lock);
- } else {
- /*
- * Someone brought it back to life whilst we didn't have any
- * locks held so return it to the expiration list
- */
- list_add_tail(&mnt->mnt_expire, mounts);
- spin_unlock(&vfsmount_lock);
- }
-}
-
-/*
- * go through the vfsmounts we've just consigned to the graveyard to
- * - check that they're still dead
- * - delete the vfsmount from the appropriate namespace under lock
- * - dispose of the corpse
- */
-static void expire_mount_list(struct list_head *graveyard, struct list_head *mounts)
-{
- struct mnt_namespace *ns;
- struct vfsmount *mnt;
-
- while (!list_empty(graveyard)) {
- LIST_HEAD(umounts);
- mnt = list_first_entry(graveyard, struct vfsmount, mnt_expire);
- list_del_init(&mnt->mnt_expire);
-
- /* don't do anything if the namespace is dead - all the
- * vfsmounts from it are going away anyway */
- ns = mnt->mnt_ns;
- if (!ns || !ns->root)
- continue;
- get_mnt_ns(ns);
-
- spin_unlock(&vfsmount_lock);
- down_write(&namespace_sem);
- expire_mount(mnt, mounts, &umounts);
- up_write(&namespace_sem);
- release_mounts(&umounts);
- mntput(mnt);
- put_mnt_ns(ns);
- spin_lock(&vfsmount_lock);
- }
-}
-
/*
* process a list of expirable mountpoints with the intent of discarding any
* mountpoints that aren't in use and haven't been touched since last we came
@@ -1284,10 +1217,12 @@ void mark_mounts_for_expiry(struct list_head *mounts)
{
struct vfsmount *mnt, *next;
LIST_HEAD(graveyard);
+ LIST_HEAD(umounts);
if (list_empty(mounts))
return;
+ down_write(&namespace_sem);
spin_lock(&vfsmount_lock);
/* extract from the expiration list every vfsmount that matches the
@@ -1298,16 +1233,19 @@ void mark_mounts_for_expiry(struct list_head *mounts)
*/
list_for_each_entry_safe(mnt, next, mounts, mnt_expire) {
if (!xchg(&mnt->mnt_expiry_mark, 1) ||
- atomic_read(&mnt->mnt_count) != 1)
+ propagate_mount_busy(mnt, 1))
continue;
-
- mntget(mnt);
list_move(&mnt->mnt_expire, &graveyard);
}
-
- expire_mount_list(&graveyard, mounts);
-
+ while (!list_empty(&graveyard)) {
+ mnt = list_first_entry(&graveyard, struct vfsmount, mnt_expire);
+ touch_mnt_namespace(mnt->mnt_ns);
+ umount_tree(mnt, 1, &umounts);
+ }
spin_unlock(&vfsmount_lock);
+ up_write(&namespace_sem);
+
+ release_mounts(&umounts);
}
EXPORT_SYMBOL_GPL(mark_mounts_for_expiry);
@@ -1343,7 +1281,6 @@ resume:
}
if (!propagate_mount_busy(mnt, 1)) {
- mntget(mnt);
list_move_tail(&mnt->mnt_expire, graveyard);
found++;
}
@@ -1363,22 +1300,22 @@ resume:
* process a list of expirable mountpoints with the intent of discarding any
* submounts of a specific parent mountpoint
*/
-void shrink_submounts(struct vfsmount *mountpoint, struct list_head *mounts)
+static void shrink_submounts(struct vfsmount *mnt, struct list_head *umounts)
{
LIST_HEAD(graveyard);
- int found;
-
- spin_lock(&vfsmount_lock);
+ struct vfsmount *m;
/* extract submounts of 'mountpoint' from the expiration list */
- while ((found = select_submounts(mountpoint, &graveyard)) != 0)
- expire_mount_list(&graveyard, mounts);
-
- spin_unlock(&vfsmount_lock);
+ while (select_submounts(mnt, &graveyard)) {
+ while (!list_empty(&graveyard)) {
+ m = list_first_entry(&graveyard, struct vfsmount,
+ mnt_expire);
+ touch_mnt_namespace(mnt->mnt_ns);
+ umount_tree(mnt, 1, umounts);
+ }
+ }
}
-EXPORT_SYMBOL_GPL(shrink_submounts);
-
/*
* Some copy_from_user() implementations do not return the exact number of
* bytes remaining to copy on a fault. But copy_mount_options() requires that.
@@ -1683,7 +1620,7 @@ void set_fs_pwd(struct fs_struct *fs, struct path *path)
path_put(&old_pwd);
}
-static void chroot_fs_refs(struct nameidata *old_nd, struct nameidata *new_nd)
+static void chroot_fs_refs(struct path *old_root, struct path *new_root)
{
struct task_struct *g, *p;
struct fs_struct *fs;
@@ -1695,12 +1632,12 @@ static void chroot_fs_refs(struct nameidata *old_nd, struct nameidata *new_nd)
if (fs) {
atomic_inc(&fs->count);
task_unlock(p);
- if (fs->root.dentry == old_nd->path.dentry
- && fs->root.mnt == old_nd->path.mnt)
- set_fs_root(fs, &new_nd->path);
- if (fs->pwd.dentry == old_nd->path.dentry
- && fs->pwd.mnt == old_nd->path.mnt)
- set_fs_pwd(fs, &new_nd->path);
+ if (fs->root.dentry == old_root->dentry
+ && fs->root.mnt == old_root->mnt)
+ set_fs_root(fs, new_root);
+ if (fs->pwd.dentry == old_root->dentry
+ && fs->pwd.mnt == old_root->mnt)
+ set_fs_pwd(fs, new_root);
put_fs_struct(fs);
} else
task_unlock(p);
@@ -1737,7 +1674,8 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
const char __user * put_old)
{
struct vfsmount *tmp;
- struct nameidata new_nd, old_nd, parent_nd, root_parent, user_nd;
+ struct nameidata new_nd, old_nd, user_nd;
+ struct path parent_path, root_parent;
int error;
if (!capable(CAP_SYS_ADMIN))
@@ -1811,19 +1749,19 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
goto out3;
} else if (!is_subdir(old_nd.path.dentry, new_nd.path.dentry))
goto out3;
- detach_mnt(new_nd.path.mnt, &parent_nd);
+ detach_mnt(new_nd.path.mnt, &parent_path);
detach_mnt(user_nd.path.mnt, &root_parent);
/* mount old root on put_old */
- attach_mnt(user_nd.path.mnt, &old_nd);
+ attach_mnt(user_nd.path.mnt, &old_nd.path);
/* mount new_root on / */
attach_mnt(new_nd.path.mnt, &root_parent);
touch_mnt_namespace(current->nsproxy->mnt_ns);
spin_unlock(&vfsmount_lock);
- chroot_fs_refs(&user_nd, &new_nd);
+ chroot_fs_refs(&user_nd.path, &new_nd.path);
security_sb_post_pivotroot(&user_nd, &new_nd);
error = 0;
- path_put(&root_parent.path);
- path_put(&parent_nd.path);
+ path_put(&root_parent);
+ path_put(&parent_path);
out2:
mutex_unlock(&old_nd.path.dentry->d_inode->i_mutex);
up_write(&namespace_sem);
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index dd4dfcd632ec..f9219024f31a 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -589,8 +589,6 @@ static void nfs_umount_begin(struct vfsmount *vfsmnt, int flags)
struct nfs_server *server = NFS_SB(vfsmnt->mnt_sb);
struct rpc_clnt *rpc;
- shrink_submounts(vfsmnt, &nfs_automount_list);
-
if (!(flags & MNT_FORCE))
return;
/* -EIO all pending I/O */
diff --git a/fs/pnode.c b/fs/pnode.c
index 05ba692bc540..1d8f5447f3f7 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -225,7 +225,7 @@ out:
*/
static inline int do_refcount_check(struct vfsmount *mnt, int count)
{
- int mycount = atomic_read(&mnt->mnt_count);
+ int mycount = atomic_read(&mnt->mnt_count) - mnt->mnt_ghosts;
return (mycount > count);
}
diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c
index f85c5cf4934c..7ee4208793b6 100644
--- a/fs/reiserfs/do_balan.c
+++ b/fs/reiserfs/do_balan.c
@@ -283,7 +283,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
return balance_leaf_when_delete(tb, flag);
zeros_num = 0;
- if (flag == M_INSERT && body == 0)
+ if (flag == M_INSERT && !body)
zeros_num = ih_item_len(ih);
pos_in_item = tb->tb_path->pos_in_item;
@@ -1728,7 +1728,7 @@ struct buffer_head *get_FEB(struct tree_balance *tb)
struct buffer_info bi;
for (i = 0; i < MAX_FEB_SIZE; i++)
- if (tb->FEB[i] != 0)
+ if (tb->FEB[i] != NULL)
break;
if (i == MAX_FEB_SIZE)
@@ -1827,7 +1827,7 @@ int get_left_neighbor_position(struct tree_balance *tb, int h)
{
int Sh_position = PATH_H_POSITION(tb->tb_path, h + 1);
- RFALSE(PATH_H_PPARENT(tb->tb_path, h) == 0 || tb->FL[h] == 0,
+ RFALSE(PATH_H_PPARENT(tb->tb_path, h) == NULL || tb->FL[h] == NULL,
"vs-12325: FL[%d](%p) or F[%d](%p) does not exist",
h, tb->FL[h], h, PATH_H_PPARENT(tb->tb_path, h));
@@ -1841,7 +1841,7 @@ int get_right_neighbor_position(struct tree_balance *tb, int h)
{
int Sh_position = PATH_H_POSITION(tb->tb_path, h + 1);
- RFALSE(PATH_H_PPARENT(tb->tb_path, h) == 0 || tb->FR[h] == 0,
+ RFALSE(PATH_H_PPARENT(tb->tb_path, h) == NULL || tb->FR[h] == NULL,
"vs-12330: F[%d](%p) or FR[%d](%p) does not exist",
h, PATH_H_PPARENT(tb->tb_path, h), h, tb->FR[h]);
diff --git a/fs/reiserfs/fix_node.c b/fs/reiserfs/fix_node.c
index 0ee35c6c9b72..07d05e0842b7 100644
--- a/fs/reiserfs/fix_node.c
+++ b/fs/reiserfs/fix_node.c
@@ -153,7 +153,7 @@ static void create_virtual_node(struct tree_balance *tb, int h)
if (vn->vn_mode == M_INSERT) {
struct virtual_item *vi = vn->vn_vi + vn->vn_affected_item_num;
- RFALSE(vn->vn_ins_ih == 0,
+ RFALSE(vn->vn_ins_ih == NULL,
"vs-8040: item header of inserted item is not specified");
vi->vi_item_len = tb->insert_size[0];
vi->vi_ih = vn->vn_ins_ih;
@@ -857,7 +857,8 @@ static int get_lfree(struct tree_balance *tb, int h)
struct buffer_head *l, *f;
int order;
- if ((f = PATH_H_PPARENT(tb->tb_path, h)) == 0 || (l = tb->FL[h]) == 0)
+ if ((f = PATH_H_PPARENT(tb->tb_path, h)) == NULL ||
+ (l = tb->FL[h]) == NULL)
return 0;
if (f == l)
@@ -878,7 +879,8 @@ static int get_rfree(struct tree_balance *tb, int h)
struct buffer_head *r, *f;
int order;
- if ((f = PATH_H_PPARENT(tb->tb_path, h)) == 0 || (r = tb->FR[h]) == 0)
+ if ((f = PATH_H_PPARENT(tb->tb_path, h)) == NULL ||
+ (r = tb->FR[h]) == NULL)
return 0;
if (f == r)
diff --git a/fs/reiserfs/lbalance.c b/fs/reiserfs/lbalance.c
index 281f8061ac58..6de060a6aa7f 100644
--- a/fs/reiserfs/lbalance.c
+++ b/fs/reiserfs/lbalance.c
@@ -626,7 +626,7 @@ static void leaf_define_dest_src_infos(int shift_mode, struct tree_balance *tb,
"vs-10250: leaf_define_dest_src_infos: shift type is unknown (%d)",
shift_mode);
}
- RFALSE(src_bi->bi_bh == 0 || dest_bi->bi_bh == 0,
+ RFALSE(!src_bi->bi_bh || !dest_bi->bi_bh,
"vs-10260: mode==%d, source (%p) or dest (%p) buffer is initialized incorrectly",
shift_mode, src_bi->bi_bh, dest_bi->bi_bh);
}
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index b378eea332ca..8867533cb727 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -452,7 +452,7 @@ static int reiserfs_add_entry(struct reiserfs_transaction_handle *th,
buflen = DEH_SIZE + ROUND_UP(namelen);
if (buflen > sizeof(small_buf)) {
buffer = kmalloc(buflen, GFP_NOFS);
- if (buffer == 0)
+ if (!buffer)
return -ENOMEM;
} else
buffer = small_buf;
diff --git a/fs/smbfs/smbiod.c b/fs/smbfs/smbiod.c
index fae8e85af0ed..6bd9b691a463 100644
--- a/fs/smbfs/smbiod.c
+++ b/fs/smbfs/smbiod.c
@@ -206,7 +206,7 @@ int smbiod_retry(struct smb_sb_info *server)
smb_close_socket(server);
- if (pid == 0) {
+ if (!pid) {
/* FIXME: this is fatal, umount? */
printk(KERN_ERR "smb_retry: no connection process\n");
server->state = CONN_RETRIED;
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