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linux/debian/patches/features/all/aufs4/aufs4-base.patch

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From: J. R. Okajima <hooanon05@yahoo.co.jp>
Date: Fri Dec 16 21:28:57 2016 +0900
Subject: aufs4.9 base patch
Origin: https://github.com/sfjro/aufs4-standalone/tree/0d8e71c28da317ec6371b6b95b46a70cefe13777
Bug-Debian: https://bugs.debian.org/541828
Patch headers added by debian/patches/features/all/aufs4/gen-patch
aufs4.9 base patch
diff --git a/MAINTAINERS b/MAINTAINERS
index 63cefa6..d78b954 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2293,6 +2293,19 @@ F: include/linux/audit.h
F: include/uapi/linux/audit.h
F: kernel/audit*
+AUFS (advanced multi layered unification filesystem) FILESYSTEM
+M: "J. R. Okajima" <hooanon05g@gmail.com>
+L: linux-unionfs@vger.kernel.org
+L: aufs-users@lists.sourceforge.net (members only)
+W: http://aufs.sourceforge.net
+T: git://github.com/sfjro/aufs4-linux.git
+S: Supported
+F: Documentation/filesystems/aufs/
+F: Documentation/ABI/testing/debugfs-aufs
+F: Documentation/ABI/testing/sysfs-aufs
+F: fs/aufs/
+F: include/uapi/linux/aufs_type.h
+
AUXILIARY DISPLAY DRIVERS
M: Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>
W: http://miguelojeda.es/auxdisplay.htm
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index fa1b7a9..6ee9235 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -701,6 +701,24 @@ static inline int is_loop_device(struct file *file)
return i && S_ISBLK(i->i_mode) && MAJOR(i->i_rdev) == LOOP_MAJOR;
}
+/*
+ * for AUFS
+ * no get/put for file.
+ */
+struct file *loop_backing_file(struct super_block *sb)
+{
+ struct file *ret;
+ struct loop_device *l;
+
+ ret = NULL;
+ if (MAJOR(sb->s_dev) == LOOP_MAJOR) {
+ l = sb->s_bdev->bd_disk->private_data;
+ ret = l->lo_backing_file;
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(loop_backing_file);
+
/* loop sysfs attributes */
static ssize_t loop_attr_show(struct device *dev, char *page,
diff --git a/fs/dcache.c b/fs/dcache.c
index 5c7cc95..df0268c 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1164,7 +1164,7 @@ enum d_walk_ret {
*
* The @enter() and @finish() callbacks are called with d_lock held.
*/
-static void d_walk(struct dentry *parent, void *data,
+void d_walk(struct dentry *parent, void *data,
enum d_walk_ret (*enter)(void *, struct dentry *),
void (*finish)(void *))
{
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 350a2c8..6f42279 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -29,7 +29,7 @@
#define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME)
-static int setfl(int fd, struct file * filp, unsigned long arg)
+int setfl(int fd, struct file * filp, unsigned long arg)
{
struct inode * inode = file_inode(filp);
int error = 0;
@@ -60,6 +60,8 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
if (filp->f_op->check_flags)
error = filp->f_op->check_flags(arg);
+ if (!error && filp->f_op->setfl)
+ error = filp->f_op->setfl(filp, arg);
if (error)
return error;
diff --git a/fs/inode.c b/fs/inode.c
index 88110fd..9a9ba3a 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1642,7 +1642,7 @@ int generic_update_time(struct inode *inode, struct timespec *time, int flags)
* This does the actual work of updating an inodes time or version. Must have
* had called mnt_want_write() before calling this.
*/
-static int update_time(struct inode *inode, struct timespec *time, int flags)
+int update_time(struct inode *inode, struct timespec *time, int flags)
{
int (*update_time)(struct inode *, struct timespec *, int);
diff --git a/fs/read_write.c b/fs/read_write.c
index 190e0d36..4052813 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -515,6 +515,28 @@ ssize_t __vfs_write(struct file *file, const char __user *p, size_t count,
}
EXPORT_SYMBOL(__vfs_write);
+vfs_readf_t vfs_readf(struct file *file)
+{
+ const struct file_operations *fop = file->f_op;
+
+ if (fop->read)
+ return fop->read;
+ if (fop->read_iter)
+ return new_sync_read;
+ return ERR_PTR(-ENOSYS);
+}
+
+vfs_writef_t vfs_writef(struct file *file)
+{
+ const struct file_operations *fop = file->f_op;
+
+ if (fop->write)
+ return fop->write;
+ if (fop->write_iter)
+ return new_sync_write;
+ return ERR_PTR(-ENOSYS);
+}
+
ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t *pos)
{
mm_segment_t old_fs;
diff --git a/fs/splice.c b/fs/splice.c
index 5a7750b..28160a7 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -855,8 +855,8 @@ ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe, struct file *out,
/*
* Attempt to initiate a splice from pipe to file.
*/
-static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
- loff_t *ppos, size_t len, unsigned int flags)
+long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ loff_t *ppos, size_t len, unsigned int flags)
{
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *,
loff_t *, size_t, unsigned int);
@@ -872,9 +872,9 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
/*
* Attempt to initiate a splice from a file to a pipe.
*/
-static long do_splice_to(struct file *in, loff_t *ppos,
- struct pipe_inode_info *pipe, size_t len,
- unsigned int flags)
+long do_splice_to(struct file *in, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags)
{
ssize_t (*splice_read)(struct file *, loff_t *,
struct pipe_inode_info *, size_t, unsigned int);
diff --git a/include/linux/file.h b/include/linux/file.h
index 7444f5f..bdac0be 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -19,6 +19,7 @@
struct path;
extern struct file *alloc_file(struct path *, fmode_t mode,
const struct file_operations *fop);
+extern struct file *get_empty_filp(void);
static inline void fput_light(struct file *file, int fput_needed)
{
diff --git a/include/linux/fs.h b/include/linux/fs.h
index dc0478c..27c05e7 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1291,6 +1291,7 @@ struct fasync_struct {
/* can be called from interrupts */
extern void kill_fasync(struct fasync_struct **, int, int);
+extern int setfl(int fd, struct file * filp, unsigned long arg);
extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
extern void f_setown(struct file *filp, unsigned long arg, int force);
extern void f_delown(struct file *filp);
@@ -1715,6 +1716,7 @@ struct file_operations {
ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
int (*check_flags)(int);
+ int (*setfl)(struct file *, unsigned long);
int (*flock) (struct file *, int, struct file_lock *);
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
@@ -1768,6 +1770,12 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
struct iovec *fast_pointer,
struct iovec **ret_pointer);
+typedef ssize_t (*vfs_readf_t)(struct file *, char __user *, size_t, loff_t *);
+typedef ssize_t (*vfs_writef_t)(struct file *, const char __user *, size_t,
+ loff_t *);
+vfs_readf_t vfs_readf(struct file *file);
+vfs_writef_t vfs_writef(struct file *file);
+
extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
extern ssize_t __vfs_write(struct file *, const char __user *, size_t, loff_t *);
extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
@@ -2140,6 +2148,7 @@ extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *,
extern void ihold(struct inode * inode);
extern void iput(struct inode *);
extern int generic_update_time(struct inode *, struct timespec *, int);
+extern int update_time(struct inode *, struct timespec *, int);
/* /sys/fs */
extern struct kobject *fs_kobj;
diff --git a/include/linux/splice.h b/include/linux/splice.h
index 00a2116..1f0a4a2 100644
--- a/include/linux/splice.h
+++ b/include/linux/splice.h
@@ -86,4 +86,10 @@ extern ssize_t splice_direct_to_actor(struct file *, struct splice_desc *,
extern const struct pipe_buf_operations page_cache_pipe_buf_ops;
extern const struct pipe_buf_operations default_pipe_buf_ops;
+
+extern long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ loff_t *ppos, size_t len, unsigned int flags);
+extern long do_splice_to(struct file *in, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags);
#endif
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