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authorLinus Torvalds <torvalds@g5.osdl.org>2006-04-11 06:34:02 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-11 06:34:02 -0700
commit88dd9c16cecbd105bbe7711b6120333f6f7b5474 (patch)
tree9632e5988abeaa7e4d20350305edc4e4652b56d1 /include
parent6dde432553551ae036aae12c2b940677d36c9a5b (diff)
parentd1195c516a9acd767cb541f914be2c6ddcafcfc1 (diff)
downloadop-kernel-dev-88dd9c16cecbd105bbe7711b6120333f6f7b5474.zip
op-kernel-dev-88dd9c16cecbd105bbe7711b6120333f6f7b5474.tar.gz
Merge branch 'splice' of git://brick.kernel.dk/data/git/linux-2.6-block
* 'splice' of git://brick.kernel.dk/data/git/linux-2.6-block: [PATCH] vfs: add splice_write and splice_read to documentation [PATCH] Remove sys_ prefix of new syscalls from __NR_sys_* [PATCH] splice: warning fix [PATCH] another round of fs/pipe.c cleanups [PATCH] splice: comment styles [PATCH] splice: add Ingo as addition copyright holder [PATCH] splice: unlikely() optimizations [PATCH] splice: speedups and optimizations [PATCH] pipe.c/fifo.c code cleanups [PATCH] get rid of the PIPE_*() macros [PATCH] splice: speedup __generic_file_splice_read [PATCH] splice: add direct fd <-> fd splicing support [PATCH] splice: add optional input and output offsets [PATCH] introduce a "kernel-internal pipe object" abstraction [PATCH] splice: be smarter about calling do_page_cache_readahead() [PATCH] splice: optimize the splice buffer mapping [PATCH] splice: cleanup __generic_file_splice_read() [PATCH] splice: only call wake_up_interruptible() when we really have to [PATCH] splice: potential !page dereference [PATCH] splice: mark the io page as accessed
Diffstat (limited to 'include')
-rw-r--r--include/asm-i386/unistd.h4
-rw-r--r--include/linux/fs.h17
-rw-r--r--include/linux/pipe_fs_i.h18
-rw-r--r--include/linux/sched.h6
-rw-r--r--include/linux/syscalls.h7
5 files changed, 31 insertions, 21 deletions
diff --git a/include/asm-i386/unistd.h b/include/asm-i386/unistd.h
index d7e13e6..6a8dd83 100644
--- a/include/asm-i386/unistd.h
+++ b/include/asm-i386/unistd.h
@@ -318,8 +318,8 @@
#define __NR_unshare 310
#define __NR_set_robust_list 311
#define __NR_get_robust_list 312
-#define __NR_sys_splice 313
-#define __NR_sys_sync_file_range 314
+#define __NR_splice 313
+#define __NR_sync_file_range 314
#define NR_syscalls 315
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 504dcf5..162c6e5 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1039,8 +1039,8 @@ struct file_operations {
int (*check_flags)(int);
int (*dir_notify)(struct file *filp, unsigned long arg);
int (*flock) (struct file *, int, struct file_lock *);
- ssize_t (*splice_write)(struct inode *, struct file *, size_t, unsigned int);
- ssize_t (*splice_read)(struct file *, struct inode *, size_t, unsigned int);
+ ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, size_t, unsigned int);
+ ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned int);
};
struct inode_operations {
@@ -1611,8 +1611,17 @@ extern ssize_t generic_file_sendfile(struct file *, loff_t *, size_t, read_actor
extern void do_generic_mapping_read(struct address_space *mapping,
struct file_ra_state *, struct file *,
loff_t *, read_descriptor_t *, read_actor_t);
-extern ssize_t generic_file_splice_read(struct file *, struct inode *, size_t, unsigned int);
-extern ssize_t generic_file_splice_write(struct inode *, struct file *, size_t, unsigned int);
+
+/* fs/splice.c */
+extern ssize_t generic_file_splice_read(struct file *,
+ struct pipe_inode_info *, size_t, unsigned int);
+extern ssize_t generic_file_splice_write(struct pipe_inode_info *,
+ struct file *, size_t, unsigned int);
+extern ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe,
+ struct file *out, size_t len, unsigned int flags);
+extern long do_splice_direct(struct file *in, struct file *out,
+ size_t len, unsigned int flags);
+
extern void
file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
extern ssize_t generic_file_readv(struct file *filp, const struct iovec *iov,
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index ec38495..123a7c2 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -36,27 +36,19 @@ struct pipe_inode_info {
unsigned int w_counter;
struct fasync_struct *fasync_readers;
struct fasync_struct *fasync_writers;
+ struct inode *inode;
};
/* Differs from PIPE_BUF in that PIPE_SIZE is the length of the actual
memory allocation, whereas PIPE_BUF makes atomicity guarantees. */
#define PIPE_SIZE PAGE_SIZE
-#define PIPE_MUTEX(inode) (&(inode).i_mutex)
-#define PIPE_WAIT(inode) (&(inode).i_pipe->wait)
-#define PIPE_READERS(inode) ((inode).i_pipe->readers)
-#define PIPE_WRITERS(inode) ((inode).i_pipe->writers)
-#define PIPE_WAITING_WRITERS(inode) ((inode).i_pipe->waiting_writers)
-#define PIPE_RCOUNTER(inode) ((inode).i_pipe->r_counter)
-#define PIPE_WCOUNTER(inode) ((inode).i_pipe->w_counter)
-#define PIPE_FASYNC_READERS(inode) (&((inode).i_pipe->fasync_readers))
-#define PIPE_FASYNC_WRITERS(inode) (&((inode).i_pipe->fasync_writers))
-
/* Drop the inode semaphore and wait for a pipe event, atomically */
-void pipe_wait(struct inode * inode);
+void pipe_wait(struct pipe_inode_info *pipe);
-struct inode* pipe_new(struct inode* inode);
-void free_pipe_info(struct inode* inode);
+struct pipe_inode_info * alloc_pipe_info(struct inode * inode);
+void free_pipe_info(struct inode * inode);
+void __free_pipe_info(struct pipe_inode_info *);
/*
* splice is tied to pipes as a transport (at least for now), so we'll just
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 83d6578..e3539c1 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -684,6 +684,7 @@ static inline void prefetch_stack(struct task_struct *t) { }
struct audit_context; /* See audit.c */
struct mempolicy;
+struct pipe_inode_info;
enum sleep_type {
SLEEP_NORMAL,
@@ -882,6 +883,11 @@ struct task_struct {
atomic_t fs_excl; /* holding fs exclusive resources */
struct rcu_head rcu;
+
+ /*
+ * cache last used pipe for splice
+ */
+ struct pipe_inode_info *splice_pipe;
};
static inline pid_t process_group(struct task_struct *tsk)
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 89c4180..f001bad 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -569,8 +569,11 @@ asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user * filename,
asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
int flags, int mode);
asmlinkage long sys_unshare(unsigned long unshare_flags);
-asmlinkage long sys_splice(int fdin, int fdout, size_t len,
- unsigned int flags);
+
+asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
+ int fd_out, loff_t __user *off_out,
+ size_t len, unsigned int flags);
+
asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
unsigned int flags);
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