f2fs: move ioctl interface definitions to separated file

Like other filesystem does, we introduce a new file f2fs.h in path of
include/uapi/linux/, and move f2fs-specified ioctl interface definitions
to that file, after then, in order to use those definitions, userspace
developer only need to include the new header file rather than
copy & paste definitions from fs/f2fs/f2fs.h.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/MAINTAINERS b/MAINTAINERS
index b516bb3..13d8fbd 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6681,6 +6681,7 @@ F:        Documentation/filesystems/f2fs.rst
 F:     fs/f2fs/
 F:     include/linux/f2fs_fs.h
 F:     include/trace/events/f2fs.h
+F:     include/uapi/linux/f2fs.h
 
 F71805F HARDWARE MONITORING DRIVER
 M:     Jean Delvare <jdelvare@suse.com>

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index cb700d7..99bcf4b 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -402,85 +402,6 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal,
        return size <= MAX_SIT_JENTRIES(journal);
 }
 
-/*
- * f2fs-specific ioctl commands
- */
-#define F2FS_IOCTL_MAGIC               0xf5
-#define F2FS_IOC_START_ATOMIC_WRITE    _IO(F2FS_IOCTL_MAGIC, 1)
-#define F2FS_IOC_COMMIT_ATOMIC_WRITE   _IO(F2FS_IOCTL_MAGIC, 2)
-#define F2FS_IOC_START_VOLATILE_WRITE  _IO(F2FS_IOCTL_MAGIC, 3)
-#define F2FS_IOC_RELEASE_VOLATILE_WRITE        _IO(F2FS_IOCTL_MAGIC, 4)
-#define F2FS_IOC_ABORT_VOLATILE_WRITE  _IO(F2FS_IOCTL_MAGIC, 5)
-#define F2FS_IOC_GARBAGE_COLLECT       _IOW(F2FS_IOCTL_MAGIC, 6, __u32)
-#define F2FS_IOC_WRITE_CHECKPOINT      _IO(F2FS_IOCTL_MAGIC, 7)
-#define F2FS_IOC_DEFRAGMENT            _IOWR(F2FS_IOCTL_MAGIC, 8,      \
-                                               struct f2fs_defragment)
-#define F2FS_IOC_MOVE_RANGE            _IOWR(F2FS_IOCTL_MAGIC, 9,      \
-                                               struct f2fs_move_range)
-#define F2FS_IOC_FLUSH_DEVICE          _IOW(F2FS_IOCTL_MAGIC, 10,      \
-                                               struct f2fs_flush_device)
-#define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11,      \
-                                               struct f2fs_gc_range)
-#define F2FS_IOC_GET_FEATURES          _IOR(F2FS_IOCTL_MAGIC, 12, __u32)
-#define F2FS_IOC_SET_PIN_FILE          _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
-#define F2FS_IOC_GET_PIN_FILE          _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
-#define F2FS_IOC_PRECACHE_EXTENTS      _IO(F2FS_IOCTL_MAGIC, 15)
-#define F2FS_IOC_RESIZE_FS             _IOW(F2FS_IOCTL_MAGIC, 16, __u64)
-#define F2FS_IOC_GET_COMPRESS_BLOCKS   _IOR(F2FS_IOCTL_MAGIC, 17, __u64)
-#define F2FS_IOC_RELEASE_COMPRESS_BLOCKS                               \
-                                       _IOR(F2FS_IOCTL_MAGIC, 18, __u64)
-#define F2FS_IOC_RESERVE_COMPRESS_BLOCKS                               \
-                                       _IOR(F2FS_IOCTL_MAGIC, 19, __u64)
-#define F2FS_IOC_SEC_TRIM_FILE         _IOW(F2FS_IOCTL_MAGIC, 20,      \
-                                               struct f2fs_sectrim_range)
-
-/*
- * should be same as XFS_IOC_GOINGDOWN.
- * Flags for going down operation used by FS_IOC_GOINGDOWN
- */
-#define F2FS_IOC_SHUTDOWN      _IOR('X', 125, __u32)   /* Shutdown */
-#define F2FS_GOING_DOWN_FULLSYNC       0x0     /* going down with full sync */
-#define F2FS_GOING_DOWN_METASYNC       0x1     /* going down with metadata */
-#define F2FS_GOING_DOWN_NOSYNC         0x2     /* going down */
-#define F2FS_GOING_DOWN_METAFLUSH      0x3     /* going down with meta flush */
-#define F2FS_GOING_DOWN_NEED_FSCK      0x4     /* going down to trigger fsck */
-
-/*
- * Flags used by F2FS_IOC_SEC_TRIM_FILE
- */
-#define F2FS_TRIM_FILE_DISCARD         0x1     /* send discard command */
-#define F2FS_TRIM_FILE_ZEROOUT         0x2     /* zero out */
-#define F2FS_TRIM_FILE_MASK            0x3
-
-struct f2fs_gc_range {
-       u32 sync;
-       u64 start;
-       u64 len;
-};
-
-struct f2fs_defragment {
-       u64 start;
-       u64 len;
-};
-
-struct f2fs_move_range {
-       u32 dst_fd;             /* destination fd */
-       u64 pos_in;             /* start position in src_fd */
-       u64 pos_out;            /* start position in dst_fd */
-       u64 len;                /* size to move */
-};
-
-struct f2fs_flush_device {
-       u32 dev_num;            /* device number to flush */
-       u32 segments;           /* # of segments to flush */
-};
-
-struct f2fs_sectrim_range {
-       u64 start;
-       u64 len;
-       u64 flags;
-};
-
 /* for inline stuff */
 #define DEF_INLINE_RESERVED_SIZE       1
 static inline int get_extra_isize(struct inode *inode);

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index fe39e59..89c451f 100644 (file)
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -31,6 +31,7 @@
 #include "gc.h"
 #include "trace.h"
 #include <trace/events/f2fs.h>
+#include <uapi/linux/f2fs.h>
 
 static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
 {

diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index f8f1e85..56b113e 100644 (file)
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -6,6 +6,7 @@
 #define _TRACE_F2FS_H
 
 #include <linux/tracepoint.h>
+#include <uapi/linux/f2fs.h>
 
 #define show_dev(dev)          MAJOR(dev), MINOR(dev)
 #define show_dev_ino(entry)    show_dev(entry->dev), (unsigned long)entry->ino

diff --git a/include/uapi/linux/f2fs.h b/include/uapi/linux/f2fs.h
new file mode 100644 (file)
index 0000000..28bcfe8
--- /dev/null
+++ b/include/uapi/linux/f2fs.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+
+#ifndef _UAPI_LINUX_F2FS_H
+#define _UAPI_LINUX_F2FS_H
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+/*
+ * f2fs-specific ioctl commands
+ */
+#define F2FS_IOCTL_MAGIC               0xf5
+#define F2FS_IOC_START_ATOMIC_WRITE    _IO(F2FS_IOCTL_MAGIC, 1)
+#define F2FS_IOC_COMMIT_ATOMIC_WRITE   _IO(F2FS_IOCTL_MAGIC, 2)
+#define F2FS_IOC_START_VOLATILE_WRITE  _IO(F2FS_IOCTL_MAGIC, 3)
+#define F2FS_IOC_RELEASE_VOLATILE_WRITE        _IO(F2FS_IOCTL_MAGIC, 4)
+#define F2FS_IOC_ABORT_VOLATILE_WRITE  _IO(F2FS_IOCTL_MAGIC, 5)
+#define F2FS_IOC_GARBAGE_COLLECT       _IOW(F2FS_IOCTL_MAGIC, 6, __u32)
+#define F2FS_IOC_WRITE_CHECKPOINT      _IO(F2FS_IOCTL_MAGIC, 7)
+#define F2FS_IOC_DEFRAGMENT            _IOWR(F2FS_IOCTL_MAGIC, 8,      \
+                                               struct f2fs_defragment)
+#define F2FS_IOC_MOVE_RANGE            _IOWR(F2FS_IOCTL_MAGIC, 9,      \
+                                               struct f2fs_move_range)
+#define F2FS_IOC_FLUSH_DEVICE          _IOW(F2FS_IOCTL_MAGIC, 10,      \
+                                               struct f2fs_flush_device)
+#define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11,      \
+                                               struct f2fs_gc_range)
+#define F2FS_IOC_GET_FEATURES          _IOR(F2FS_IOCTL_MAGIC, 12, __u32)
+#define F2FS_IOC_SET_PIN_FILE          _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
+#define F2FS_IOC_GET_PIN_FILE          _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
+#define F2FS_IOC_PRECACHE_EXTENTS      _IO(F2FS_IOCTL_MAGIC, 15)
+#define F2FS_IOC_RESIZE_FS             _IOW(F2FS_IOCTL_MAGIC, 16, __u64)
+#define F2FS_IOC_GET_COMPRESS_BLOCKS   _IOR(F2FS_IOCTL_MAGIC, 17, __u64)
+#define F2FS_IOC_RELEASE_COMPRESS_BLOCKS                               \
+                                       _IOR(F2FS_IOCTL_MAGIC, 18, __u64)
+#define F2FS_IOC_RESERVE_COMPRESS_BLOCKS                               \
+                                       _IOR(F2FS_IOCTL_MAGIC, 19, __u64)
+#define F2FS_IOC_SEC_TRIM_FILE         _IOW(F2FS_IOCTL_MAGIC, 20,      \
+                                               struct f2fs_sectrim_range)
+
+/*
+ * should be same as XFS_IOC_GOINGDOWN.
+ * Flags for going down operation used by FS_IOC_GOINGDOWN
+ */
+#define F2FS_IOC_SHUTDOWN      _IOR('X', 125, __u32)   /* Shutdown */
+#define F2FS_GOING_DOWN_FULLSYNC       0x0     /* going down with full sync */
+#define F2FS_GOING_DOWN_METASYNC       0x1     /* going down with metadata */
+#define F2FS_GOING_DOWN_NOSYNC         0x2     /* going down */
+#define F2FS_GOING_DOWN_METAFLUSH      0x3     /* going down with meta flush */
+#define F2FS_GOING_DOWN_NEED_FSCK      0x4     /* going down to trigger fsck */
+
+/*
+ * Flags used by F2FS_IOC_SEC_TRIM_FILE
+ */
+#define F2FS_TRIM_FILE_DISCARD         0x1     /* send discard command */
+#define F2FS_TRIM_FILE_ZEROOUT         0x2     /* zero out */
+#define F2FS_TRIM_FILE_MASK            0x3
+
+struct f2fs_gc_range {
+       __u32 sync;
+       __u64 start;
+       __u64 len;
+};
+
+struct f2fs_defragment {
+       __u64 start;
+       __u64 len;
+};
+
+struct f2fs_move_range {
+       __u32 dst_fd;           /* destination fd */
+       __u64 pos_in;           /* start position in src_fd */
+       __u64 pos_out;          /* start position in dst_fd */
+       __u64 len;              /* size to move */
+};
+
+struct f2fs_flush_device {
+       __u32 dev_num;          /* device number to flush */
+       __u32 segments;         /* # of segments to flush */
+};
+
+struct f2fs_sectrim_range {
+       __u64 start;
+       __u64 len;
+       __u64 flags;
+};
+
+#endif /* _UAPI_LINUX_F2FS_H */