diff options
| -rw-r--r-- | fs/btrfs/compression.c | 46 | ||||
| -rw-r--r-- | fs/btrfs/compression.h | 44 | ||||
| -rw-r--r-- | fs/btrfs/lzo.c | 11 | ||||
| -rw-r--r-- | fs/btrfs/zlib.c | 10 |
4 files changed, 54 insertions, 57 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index ce57fea2a66f..ba511dd454d5 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -42,45 +42,6 @@ #include "extent_io.h" #include "extent_map.h" -struct compressed_bio { - /* number of bios pending for this compressed extent */ - refcount_t pending_bios; - - /* the pages with the compressed data on them */ - struct page **compressed_pages; - - /* inode that owns this data */ - struct inode *inode; - - /* starting offset in the inode for our pages */ - u64 start; - - /* number of bytes in the inode we're working on */ - unsigned long len; - - /* number of bytes on disk */ - unsigned long compressed_len; - - /* the compression algorithm for this bio */ - int compress_type; - - /* number of compressed pages in the array */ - unsigned long nr_pages; - - /* IO errors */ - int errors; - int mirror_num; - - /* for reads, this is the bio we are copying the data into */ - struct bio *orig_bio; - - /* - * the start of a variable length array of checksums only - * used by reads - */ - u32 sums; -}; - static int btrfs_decompress_bio(struct compressed_bio *cb); static inline int compressed_bio_size(struct btrfs_fs_info *fs_info, @@ -963,12 +924,9 @@ static int btrfs_decompress_bio(struct compressed_bio *cb) int type = cb->compress_type; workspace = find_workspace(type); - - ret = btrfs_compress_op[type - 1]->decompress_bio(workspace, - cb->compressed_pages, cb->start, cb->orig_bio, - cb->compressed_len); - + ret = btrfs_compress_op[type - 1]->decompress_bio(workspace, cb); free_workspace(type, workspace); + return ret; } diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h index 39ec43ab8df1..89bcf975efb8 100644 --- a/fs/btrfs/compression.h +++ b/fs/btrfs/compression.h @@ -34,6 +34,45 @@ /* Maximum size of data before compression */ #define BTRFS_MAX_UNCOMPRESSED (SZ_128K) +struct compressed_bio { + /* number of bios pending for this compressed extent */ + refcount_t pending_bios; + + /* the pages with the compressed data on them */ + struct page **compressed_pages; + + /* inode that owns this data */ + struct inode *inode; + + /* starting offset in the inode for our pages */ + u64 start; + + /* number of bytes in the inode we're working on */ + unsigned long len; + + /* number of bytes on disk */ + unsigned long compressed_len; + + /* the compression algorithm for this bio */ + int compress_type; + + /* number of compressed pages in the array */ + unsigned long nr_pages; + + /* IO errors */ + int errors; + int mirror_num; + + /* for reads, this is the bio we are copying the data into */ + struct bio *orig_bio; + + /* + * the start of a variable length array of checksums only + * used by reads + */ + u32 sums; +}; + void btrfs_init_compress(void); void btrfs_exit_compress(void); @@ -78,10 +117,7 @@ struct btrfs_compress_op { unsigned long *total_out); int (*decompress_bio)(struct list_head *workspace, - struct page **pages_in, - u64 disk_start, - struct bio *orig_bio, - size_t srclen); + struct compressed_bio *cb); int (*decompress)(struct list_head *workspace, unsigned char *data_in, diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c index f48c8c14dc14..5995563ca56f 100644 --- a/fs/btrfs/lzo.c +++ b/fs/btrfs/lzo.c @@ -25,6 +25,7 @@ #include <linux/pagemap.h> #include <linux/bio.h> #include <linux/lzo.h> +#include <linux/refcount.h> #include "compression.h" #define LZO_LEN 4 @@ -254,16 +255,13 @@ out: return ret; } -static int lzo_decompress_bio(struct list_head *ws, - struct page **pages_in, - u64 disk_start, - struct bio *orig_bio, - size_t srclen) +static int lzo_decompress_bio(struct list_head *ws, struct compressed_bio *cb) { struct workspace *workspace = list_entry(ws, struct workspace, list); int ret = 0, ret2; char *data_in; unsigned long page_in_index = 0; + size_t srclen = cb->compressed_len; unsigned long total_pages_in = DIV_ROUND_UP(srclen, PAGE_SIZE); unsigned long buf_start; unsigned long buf_offset = 0; @@ -278,6 +276,9 @@ static int lzo_decompress_bio(struct list_head *ws, unsigned long tot_len; char *buf; bool may_late_unmap, need_unmap; + struct page **pages_in = cb->compressed_pages; + u64 disk_start = cb->start; + struct bio *orig_bio = cb->orig_bio; data_in = kmap(pages_in[0]); tot_len = read_compress_length(data_in); diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c index 135b10823c6d..d5446e18bb59 100644 --- a/fs/btrfs/zlib.c +++ b/fs/btrfs/zlib.c @@ -30,6 +30,7 @@ #include <linux/sched.h> #include <linux/pagemap.h> #include <linux/bio.h> +#include <linux/refcount.h> #include "compression.h" struct workspace { @@ -211,10 +212,7 @@ out: return ret; } -static int zlib_decompress_bio(struct list_head *ws, struct page **pages_in, - u64 disk_start, - struct bio *orig_bio, - size_t srclen) +static int zlib_decompress_bio(struct list_head *ws, struct compressed_bio *cb) { struct workspace *workspace = list_entry(ws, struct workspace, list); int ret = 0, ret2; @@ -222,8 +220,12 @@ static int zlib_decompress_bio(struct list_head *ws, struct page **pages_in, char *data_in; size_t total_out = 0; unsigned long page_in_index = 0; + size_t srclen = cb->compressed_len; unsigned long total_pages_in = DIV_ROUND_UP(srclen, PAGE_SIZE); unsigned long buf_start; + struct page **pages_in = cb->compressed_pages; + u64 disk_start = cb->start; + struct bio *orig_bio = cb->orig_bio; data_in = kmap(pages_in[page_in_index]); workspace->strm.next_in = data_in; |