#ifndef __EXTENTMAP__ #define __EXTENTMAP__ #include #define EXTENT_MAP_LAST_BYTE ((u64)-4) #define EXTENT_MAP_HOLE ((u64)-3) #define EXTENT_MAP_INLINE ((u64)-2) #define EXTENT_MAP_DELALLOC ((u64)-1) /* bits for the flags field */ #define EXTENT_FLAG_PINNED 0 /* this entry not yet on disk, don't free it */ #define EXTENT_FLAG_COMPRESSED 1 #define EXTENT_FLAG_VACANCY 2 /* no file extent item found */ #define EXTENT_FLAG_PREALLOC 3 /* pre-allocated extent */ #define EXTENT_FLAG_LOGGING 4 /* Logging this extent */ #define EXTENT_FLAG_FILLING 5 /* Filling in a preallocated extent */ #define EXTENT_FLAG_FS_MAPPING 6 /* filesystem extent mapping type */ struct extent_map { struct rb_node rb_node; /* all of these are in bytes */ u64 start; u64 len; u64 mod_start; u64 mod_len; u64 orig_start; u64 orig_block_len; u64 ram_bytes; u64 block_start; u64 block_len; u64 generation; unsigned long flags; union { struct block_device *bdev; /* * used for chunk mappings * flags & EXTENT_FLAG_FS_MAPPING must be set */ struct map_lookup *map_lookup; }; atomic_t refs; unsigned int compress_type; struct list_head list; }; struct extent_map_tree { struct rb_root map; struct list_head modified_extents; rwlock_t lock; }; static inline int extent_map_in_tree(const struct extent_map *em) { return !RB_EMPTY_NODE(&em->rb_node); } static inline u64 extent_map_end(struct extent_map *em) { if (em->start + em->len < em->start) return (u64)-1; return em->start + em->len; } static inline u64 extent_map_block_end(struct extent_map *em) { if (em->block_start + em->block_len < em->block_start) return (u64)-1; return em->block_start + em->block_len; } void extent_map_tree_init(struct extent_map_tree *tree); struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree, u64 start, u64 len); int add_extent_mapping(struct extent_map_tree *tree, struct extent_map *em, int modified); int remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em); void replace_extent_mapping(struct extent_map_tree *tree, struct extent_map *cur, struct extent_map *new, int modified); struct extent_map *alloc_extent_map(void); void free_extent_map(struct extent_map *em); int __init extent_map_init(void); void extent_map_exit(void); int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len, u64 gen); void clear_em_logging(struct extent_map_tree *tree, struct extent_map *em); struct extent_map *search_extent_mapping(struct extent_map_tree *tree, u64 start, u64 len); #endif ef='/cgit.cgi/linux/net-next.git/log/include?id=78098117f8bfad4f2104c3f7b6b69071af95a246'>include

Age	Commit message (Expand)	Author	Files	Lines
2017-02-09	sctp: add support for generating stream reconf add incoming/outgoing streams ...	Xin Long	2	-0/+10
2017-02-09	sctp: implement sender-side procedures for SSN/TSN Reset Request Parameter	Xin Long	2	-0/+2
2017-02-09	sctp: add support for generating stream reconf ssn/tsn reset request chunk	Xin Long	2	-0/+7
2017-02-09	sctp: drop unnecessary __packed from some stream reconf structures	Xin Long	1	-3/+3
2017-02-08	ipv4: fib: Notify about nexthop status changes	Ido Schimmel	1	-0/+7
2017-02-08	net: stmmac: Remove the bus_setup function pointer	LABBE Corentin	1	-1/+0
2017-02-08	gro_cells: move to net/core/gro_cells.c	Eric Dumazet	1	-82/+4
2017-02-08	net: phy: Add LED mode driver for Microsemi PHYs.	Raju Lakkaraju