Move c_src dirs back to toplevel

[bcachefs-tools-debian] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 35082ae30460911d26fc11bb1f052724c1d62378..39143117c1a9bf1e22a8cec790eb1e88d426257d 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -6,9 +6,12 @@
 #include <linux/kobject.h>
 #include <linux/types.h>
 
-#define BIO_MAX_VECS   256
+#define MAX_LFS_FILESIZE       ((loff_t)LLONG_MAX)
+
+#define BIO_MAX_VECS   256U
 
 typedef unsigned fmode_t;
+typedef __u32 __bitwise blk_opf_t;
 
 struct bio;
 struct user_namespace;
@@ -20,29 +23,20 @@ struct user_namespace;
 #define MINOR(dev)     ((unsigned int) ((dev) & MINORMASK))
 #define MKDEV(ma,mi)   (((ma) << MINORBITS) | (mi))
 
-/* file is open for reading */
-#define FMODE_READ             ((__force fmode_t)0x1)
-/* file is open for writing */
-#define FMODE_WRITE            ((__force fmode_t)0x2)
-/* file is seekable */
-#define FMODE_LSEEK            ((__force fmode_t)0x4)
-/* file can be accessed using pread */
-#define FMODE_PREAD            ((__force fmode_t)0x8)
-/* file can be accessed using pwrite */
-#define FMODE_PWRITE           ((__force fmode_t)0x10)
-/* File is opened for execution with sys_execve / sys_uselib */
-#define FMODE_EXEC             ((__force fmode_t)0x20)
-/* File is opened with O_NDELAY (only set for block devices) */
-#define FMODE_NDELAY           ((__force fmode_t)0x40)
-/* File is opened with O_EXCL (only set for block devices) */
-#define FMODE_EXCL             ((__force fmode_t)0x80)
-/* File is opened using open(.., 3, ..) and is writeable only for ioctls
-   (specialy hack for floppy.c) */
-#define FMODE_WRITE_IOCTL      ((__force fmode_t)0x100)
-/* 32bit hashes as llseek() offset (for directories) */
-#define FMODE_32BITHASH         ((__force fmode_t)0x200)
-/* 64bit hashes as llseek() offset (for directories) */
-#define FMODE_64BITHASH         ((__force fmode_t)0x400)
+typedef unsigned int __bitwise blk_mode_t;
+
+/* open for reading */
+#define BLK_OPEN_READ          ((__force blk_mode_t)(1 << 0))
+/* open for writing */
+#define BLK_OPEN_WRITE         ((__force blk_mode_t)(1 << 1))
+/* open exclusively (vs other exclusive openers */
+#define BLK_OPEN_EXCL          ((__force blk_mode_t)(1 << 2))
+/* opened with O_NDELAY */
+#define BLK_OPEN_NDELAY                ((__force blk_mode_t)(1 << 3))
+/* open for "writes" only for ioctls (specialy hack for floppy.c) */
+#define BLK_OPEN_WRITE_IOCTL   ((__force blk_mode_t)(1 << 4))
+
+#define BLK_OPEN_BUFFERED      ((__force blk_mode_t)(1 << 5))
 
 struct inode {
        unsigned long           i_ino;
@@ -69,20 +63,36 @@ static inline void submit_bio(struct bio *bio)
        generic_make_request(bio);
 }
 
-int blkdev_issue_discard(struct block_device *, sector_t,
-                        sector_t, gfp_t, unsigned long);
+int blkdev_issue_discard(struct block_device *, sector_t, sector_t, gfp_t);
+int blkdev_issue_zeroout(struct block_device *, sector_t, sector_t, gfp_t, unsigned);
 
 #define bdev_get_queue(bdev)           (&((bdev)->queue))
 
-#define blk_queue_discard(q)           ((void) (q), 0)
+#ifndef SECTOR_SHIFT
+#define SECTOR_SHIFT 9
+#endif
+#ifndef SECTOR_SIZE
+#define SECTOR_SIZE (1 << SECTOR_SHIFT)
+#endif
+
+#define PAGE_SECTORS_SHIFT     (PAGE_SHIFT - SECTOR_SHIFT)
+#define PAGE_SECTORS           (1 << PAGE_SECTORS_SHIFT)
+#define SECTOR_MASK            (PAGE_SECTORS - 1)
+
+#define bdev_max_discard_sectors(bdev) ((void) (bdev), 0)
 #define blk_queue_nonrot(q)            ((void) (q), 0)
 
 unsigned bdev_logical_block_size(struct block_device *bdev);
 sector_t get_capacity(struct gendisk *disk);
 
-void blkdev_put(struct block_device *bdev, fmode_t mode);
+struct blk_holder_ops {
+        void (*mark_dead)(struct block_device *bdev);
+};
+
+void blkdev_put(struct block_device *bdev, void *holder);
 void bdput(struct block_device *bdev);
-struct block_device *blkdev_get_by_path(const char *path, fmode_t mode, void *holder);
+struct block_device *blkdev_get_by_path(const char *path, blk_mode_t mode,
+                                       void *holder, const struct blk_holder_ops *hop);
 int lookup_bdev(const char *path, dev_t *);
 
 struct super_block {