add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/fs/btrfs/compression.h
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@@ -8,6 +8,8 @@
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8
 
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 #include <linux/sizes.h>
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+struct btrfs_inode;
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+
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 /*
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  * We want to make sure that amount of RAM required to uncompress an extent is
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  * reasonable, so we limit the total size in ram of a compressed extent to
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@@ -61,8 +63,18 @@
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 	 * the start of a variable length array of checksums only
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 	 * used by reads
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 	 */
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-	u32 sums;
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+	u8 sums[];
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 };
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+
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+static inline unsigned int btrfs_compress_type(unsigned int type_level)
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+{
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+	return (type_level & 0xF);
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+}
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+
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+static inline unsigned int btrfs_compress_level(unsigned int type_level)
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+{
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+	return ((type_level & 0xF0) >> 4);
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+}
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 void __init btrfs_init_compress(void);
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 void __cold btrfs_exit_compress(void);
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@@ -78,50 +90,51 @@
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 			      unsigned long total_out, u64 disk_start,
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 			      struct bio *bio);
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-blk_status_t btrfs_submit_compressed_write(struct inode *inode, u64 start,
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+blk_status_t btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start,
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 				  unsigned long len, u64 disk_start,
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 				  unsigned long compressed_len,
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 				  struct page **compressed_pages,
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 				  unsigned long nr_pages,
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-				  unsigned int write_flags);
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+				  unsigned int write_flags,
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+				  struct cgroup_subsys_state *blkcg_css);
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 blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
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 				 int mirror_num, unsigned long bio_flags);
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102
 
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-unsigned btrfs_compress_str2level(const char *str);
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+unsigned int btrfs_compress_str2level(unsigned int type, const char *str);
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 enum btrfs_compression_type {
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 	BTRFS_COMPRESS_NONE  = 0,
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 	BTRFS_COMPRESS_ZLIB  = 1,
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 	BTRFS_COMPRESS_LZO   = 2,
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 	BTRFS_COMPRESS_ZSTD  = 3,
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-	BTRFS_COMPRESS_TYPES = 3,
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+	BTRFS_NR_COMPRESS_TYPES = 4,
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 };
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+
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+struct workspace_manager {
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+	struct list_head idle_ws;
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+	spinlock_t ws_lock;
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+	/* Number of free workspaces */
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+	int free_ws;
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+	/* Total number of allocated workspaces */
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+	atomic_t total_ws;
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+	/* Waiters for a free workspace */
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+	wait_queue_head_t ws_wait;
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+};
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+
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+struct list_head *btrfs_get_workspace(int type, unsigned int level);
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+void btrfs_put_workspace(int type, struct list_head *ws);
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 struct btrfs_compress_op {
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-	struct list_head *(*alloc_workspace)(void);
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-
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-	void (*free_workspace)(struct list_head *workspace);
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-
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-	int (*compress_pages)(struct list_head *workspace,
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-			      struct address_space *mapping,
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-			      u64 start,
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-			      struct page **pages,
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-			      unsigned long *out_pages,
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-			      unsigned long *total_in,
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-			      unsigned long *total_out);
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-
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-	int (*decompress_bio)(struct list_head *workspace,
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-				struct compressed_bio *cb);
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-
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-	int (*decompress)(struct list_head *workspace,
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-			  unsigned char *data_in,
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-			  struct page *dest_page,
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-			  unsigned long start_byte,
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-			  size_t srclen, size_t destlen);
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-
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-	void (*set_level)(struct list_head *ws, unsigned int type);
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+	struct workspace_manager *workspace_manager;
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+	/* Maximum level supported by the compression algorithm */
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+	unsigned int max_level;
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+	unsigned int default_level;
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 };
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+/* The heuristic workspaces are managed via the 0th workspace manager */
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+#define BTRFS_NR_WORKSPACE_MANAGERS	BTRFS_NR_COMPRESS_TYPES
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+
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+extern const struct btrfs_compress_op btrfs_heuristic_compress;
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 extern const struct btrfs_compress_op btrfs_zlib_compress;
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 extern const struct btrfs_compress_op btrfs_lzo_compress;
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 extern const struct btrfs_compress_op btrfs_zstd_compress;
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@@ -131,4 +144,39 @@
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144
 
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 int btrfs_compress_heuristic(struct inode *inode, u64 start, u64 end);
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146
 
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+int zlib_compress_pages(struct list_head *ws, struct address_space *mapping,
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+		u64 start, struct page **pages, unsigned long *out_pages,
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+		unsigned long *total_in, unsigned long *total_out);
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+int zlib_decompress_bio(struct list_head *ws, struct compressed_bio *cb);
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+int zlib_decompress(struct list_head *ws, unsigned char *data_in,
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+		struct page *dest_page, unsigned long start_byte, size_t srclen,
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+		size_t destlen);
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+struct list_head *zlib_alloc_workspace(unsigned int level);
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+void zlib_free_workspace(struct list_head *ws);
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+struct list_head *zlib_get_workspace(unsigned int level);
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+
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+int lzo_compress_pages(struct list_head *ws, struct address_space *mapping,
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+		u64 start, struct page **pages, unsigned long *out_pages,
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+		unsigned long *total_in, unsigned long *total_out);
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+int lzo_decompress_bio(struct list_head *ws, struct compressed_bio *cb);
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+int lzo_decompress(struct list_head *ws, unsigned char *data_in,
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+		struct page *dest_page, unsigned long start_byte, size_t srclen,
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+		size_t destlen);
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+struct list_head *lzo_alloc_workspace(unsigned int level);
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+void lzo_free_workspace(struct list_head *ws);
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+
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+int zstd_compress_pages(struct list_head *ws, struct address_space *mapping,
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+		u64 start, struct page **pages, unsigned long *out_pages,
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+		unsigned long *total_in, unsigned long *total_out);
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+int zstd_decompress_bio(struct list_head *ws, struct compressed_bio *cb);
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+int zstd_decompress(struct list_head *ws, unsigned char *data_in,
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+		struct page *dest_page, unsigned long start_byte, size_t srclen,
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+		size_t destlen);
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+void zstd_init_workspace_manager(void);
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+void zstd_cleanup_workspace_manager(void);
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+struct list_head *zstd_alloc_workspace(unsigned int level);
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+void zstd_free_workspace(struct list_head *ws);
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+struct list_head *zstd_get_workspace(unsigned int level);
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+void zstd_put_workspace(struct list_head *ws);
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+
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 #endif