diff options
Diffstat (limited to 'drivers/mtd/ubi/ubi.h')
| -rw-r--r-- | drivers/mtd/ubi/ubi.h | 42 |
1 files changed, 30 insertions, 12 deletions
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index 5959f91be24..5e941a63303 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -221,14 +221,15 @@ struct ubi_wl_entry; * @vtbl_slots: how many slots are available in the volume table * @vtbl_size: size of the volume table in bytes * @vtbl: in-RAM volume table copy + * @vtbl_mutex: protects on-flash volume table * * @max_ec: current highest erase counter value * @mean_ec: current mean erase counter value * - * global_sqnum: global sequence number + * @global_sqnum: global sequence number * @ltree_lock: protects the lock tree and @global_sqnum * @ltree: the lock tree - * @vtbl_mutex: protects on-flash volume table + * @alc_mutex: serializes "atomic LEB change" operations * * @used: RB-tree of used physical eraseblocks * @free: RB-tree of free physical eraseblocks @@ -274,6 +275,12 @@ struct ubi_wl_entry; * @bad_allowed: whether the MTD device admits of bad physical eraseblocks or * not * @mtd: MTD device descriptor + * + * @peb_buf1: a buffer of PEB size used for different purposes + * @peb_buf2: another buffer of PEB size used for different purposes + * @buf_mutex: proptects @peb_buf1 and @peb_buf2 + * @dbg_peb_buf: buffer of PEB size used for debugging + * @dbg_buf_mutex: proptects @dbg_peb_buf */ struct ubi_device { struct cdev cdev; @@ -302,6 +309,7 @@ struct ubi_device { unsigned long long global_sqnum; spinlock_t ltree_lock; struct rb_root ltree; + struct mutex alc_mutex; /* Wear-leveling unit's stuff */ struct rb_root used; @@ -343,6 +351,14 @@ struct ubi_device { int vid_hdr_shift; int bad_allowed; struct mtd_info *mtd; + + void *peb_buf1; + void *peb_buf2; + struct mutex buf_mutex; +#ifdef CONFIG_MTD_UBI_DEBUG + void *dbg_peb_buf; + struct mutex dbg_buf_mutex; +#endif }; extern struct file_operations ubi_cdev_operations; @@ -409,18 +425,18 @@ void ubi_wl_close(struct ubi_device *ubi); /* io.c */ int ubi_io_read(const struct ubi_device *ubi, void *buf, int pnum, int offset, int len); -int ubi_io_write(const struct ubi_device *ubi, const void *buf, int pnum, - int offset, int len); -int ubi_io_sync_erase(const struct ubi_device *ubi, int pnum, int torture); +int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset, + int len); +int ubi_io_sync_erase(struct ubi_device *ubi, int pnum, int torture); int ubi_io_is_bad(const struct ubi_device *ubi, int pnum); int ubi_io_mark_bad(const struct ubi_device *ubi, int pnum); -int ubi_io_read_ec_hdr(const struct ubi_device *ubi, int pnum, +int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum, struct ubi_ec_hdr *ec_hdr, int verbose); -int ubi_io_write_ec_hdr(const struct ubi_device *ubi, int pnum, +int ubi_io_write_ec_hdr(struct ubi_device *ubi, int pnum, struct ubi_ec_hdr *ec_hdr); -int ubi_io_read_vid_hdr(const struct ubi_device *ubi, int pnum, +int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum, struct ubi_vid_hdr *vid_hdr, int verbose); -int ubi_io_write_vid_hdr(const struct ubi_device *ubi, int pnum, +int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum, struct ubi_vid_hdr *vid_hdr); /* @@ -439,16 +455,18 @@ int ubi_io_write_vid_hdr(const struct ubi_device *ubi, int pnum, /** * ubi_zalloc_vid_hdr - allocate a volume identifier header object. * @ubi: UBI device description object + * @gfp_flags: GFP flags to allocate with * * This function returns a pointer to the newly allocated and zero-filled * volume identifier header object in case of success and %NULL in case of * failure. */ -static inline struct ubi_vid_hdr *ubi_zalloc_vid_hdr(const struct ubi_device *ubi) +static inline struct ubi_vid_hdr * +ubi_zalloc_vid_hdr(const struct ubi_device *ubi, gfp_t gfp_flags) { void *vid_hdr; - vid_hdr = kzalloc(ubi->vid_hdr_alsize, GFP_KERNEL); + vid_hdr = kzalloc(ubi->vid_hdr_alsize, gfp_flags); if (!vid_hdr) return NULL; @@ -492,7 +510,7 @@ static inline int ubi_io_read_data(const struct ubi_device *ubi, void *buf, * the beginning of the logical eraseblock, not to the beginning of the * physical eraseblock. */ -static inline int ubi_io_write_data(const struct ubi_device *ubi, const void *buf, +static inline int ubi_io_write_data(struct ubi_device *ubi, const void *buf, int pnum, int offset, int len) { ubi_assert(offset >= 0); |