[PATCH] slab: remove SLAB_KERNEL

[mirror_ubuntu-artful-kernel.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 34406ed467c352c4ac4ad67b490c0729107c967d..94b831b8157c332cbe1b116c3b83dd975dbec431 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -276,7 +276,7 @@ extern int dir_notify_enable;
 #include <linux/radix-tree.h>
 #include <linux/prio_tree.h>
 #include <linux/init.h>
-#include <linux/sched.h>
+#include <linux/pid.h>
 #include <linux/mutex.h>
 
 #include <asm/atomic.h>
@@ -623,6 +623,9 @@ enum inode_i_mutex_lock_class
        I_MUTEX_QUOTA
 };
 
+extern void inode_double_lock(struct inode *inode1, struct inode *inode2);
+extern void inode_double_unlock(struct inode *inode1, struct inode *inode2);
+
 /*
  * NOTE: in a 32bit arch with a preemptable kernel and
  * an UP compile the i_size_read/write must be atomic
@@ -656,7 +659,11 @@ static inline loff_t i_size_read(struct inode *inode)
 #endif
 }
 
-
+/*
+ * NOTE: unlike i_size_read(), i_size_write() does need locking around it
+ * (normally i_mutex), otherwise on 32bit/SMP an update of i_size_seqcount
+ * can be lost, resulting in subsequent i_size_read() calls spinning forever.
+ */
 static inline void i_size_write(struct inode *inode, loff_t i_size)
 {
 #if BITS_PER_LONG==32 && defined(CONFIG_SMP)
@@ -970,36 +977,13 @@ enum {
 #define vfs_check_frozen(sb, level) \
        wait_event((sb)->s_wait_unfrozen, ((sb)->s_frozen < (level)))
 
-static inline void get_fs_excl(void)
-{
-       atomic_inc(&current->fs_excl);
-}
-
-static inline void put_fs_excl(void)
-{
-       atomic_dec(&current->fs_excl);
-}
-
-static inline int has_fs_excl(void)
-{
-       return atomic_read(&current->fs_excl);
-}
-
+#define get_fs_excl() atomic_inc(&current->fs_excl)
+#define put_fs_excl() atomic_dec(&current->fs_excl)
+#define has_fs_excl() atomic_read(&current->fs_excl)
 
-/*
- * Superblock locking.
- */
-static inline void lock_super(struct super_block * sb)
-{
-       get_fs_excl();
-       mutex_lock(&sb->s_lock);
-}
-
-static inline void unlock_super(struct super_block * sb)
-{
-       put_fs_excl();
-       mutex_unlock(&sb->s_lock);
-}
+/* not quite ready to be deprecated, but... */
+extern void lock_super(struct super_block *);
+extern void unlock_super(struct super_block *);
 
 /*
  * VFS helper functions..
@@ -1497,7 +1481,9 @@ extern char * getname(const char __user *);
 extern void __init vfs_caches_init_early(void);
 extern void __init vfs_caches_init(unsigned long);
 
-#define __getname()    kmem_cache_alloc(names_cachep, SLAB_KERNEL)
+extern struct kmem_cache *names_cachep;
+
+#define __getname()    kmem_cache_alloc(names_cachep, GFP_KERNEL)
 #define __putname(name) kmem_cache_free(names_cachep, (void *)(name))
 #ifndef CONFIG_AUDITSYSCALL
 #define putname(name)   __putname(name)
@@ -1705,6 +1691,8 @@ extern void __iget(struct inode * inode);
 extern void clear_inode(struct inode *);
 extern void destroy_inode(struct inode *);
 extern struct inode *new_inode(struct super_block *);
+extern int __remove_suid(struct dentry *, int);
+extern int should_remove_suid(struct dentry *);
 extern int remove_suid(struct dentry *);
 extern void remove_dquot_ref(struct super_block *, int, struct list_head *);
 
@@ -1751,6 +1739,8 @@ extern ssize_t generic_file_splice_read(struct file *, loff_t *,
                struct pipe_inode_info *, size_t, unsigned int);
 extern ssize_t generic_file_splice_write(struct pipe_inode_info *,
                struct file *, loff_t *, size_t, unsigned int);
+extern ssize_t generic_file_splice_write_nolock(struct pipe_inode_info *,
+               struct file *, loff_t *, size_t, unsigned int);
 extern ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe,
                struct file *out, loff_t *, size_t len, unsigned int flags);
 extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,