diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/data.c | 48 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 6 |
2 files changed, 42 insertions, 12 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 726e58b76295..73713bbd4646 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -561,7 +561,7 @@ out: * c. give the block addresses to blockdev */ static int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, - int create, bool fiemap) + int create, int flag) { unsigned int maxblocks = map->m_len; struct dnode_of_data dn; @@ -595,8 +595,19 @@ static int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, err = 0; goto unlock_out; } - if (dn.data_blkaddr == NEW_ADDR && !fiemap) - goto put_out; + if (dn.data_blkaddr == NEW_ADDR) { + if (flag == F2FS_GET_BLOCK_BMAP) { + err = -ENOENT; + goto put_out; + } else if (flag == F2FS_GET_BLOCK_READ || + flag == F2FS_GET_BLOCK_DIO) { + goto put_out; + } + /* + * if it is in fiemap call path (flag = F2FS_GET_BLOCK_FIEMAP), + * mark it as mapped and unwritten block. + */ + } if (dn.data_blkaddr != NULL_ADDR) { map->m_flags = F2FS_MAP_MAPPED; @@ -611,6 +622,8 @@ static int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, map->m_flags = F2FS_MAP_NEW | F2FS_MAP_MAPPED; map->m_pblk = dn.data_blkaddr; } else { + if (flag == F2FS_GET_BLOCK_BMAP) + err = -ENOENT; goto put_out; } @@ -633,7 +646,9 @@ get_next: err = 0; goto unlock_out; } - if (dn.data_blkaddr == NEW_ADDR && !fiemap) + + if (dn.data_blkaddr == NEW_ADDR && + flag != F2FS_GET_BLOCK_FIEMAP) goto put_out; end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); @@ -675,7 +690,7 @@ out: } static int __get_data_block(struct inode *inode, sector_t iblock, - struct buffer_head *bh, int create, bool fiemap) + struct buffer_head *bh, int create, int flag) { struct f2fs_map_blocks map; int ret; @@ -683,7 +698,7 @@ static int __get_data_block(struct inode *inode, sector_t iblock, map.m_lblk = iblock; map.m_len = bh->b_size >> inode->i_blkbits; - ret = f2fs_map_blocks(inode, &map, create, fiemap); + ret = f2fs_map_blocks(inode, &map, create, flag); if (!ret) { map_bh(bh, inode->i_sb, map.m_pblk); bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags; @@ -693,15 +708,23 @@ static int __get_data_block(struct inode *inode, sector_t iblock, } static int get_data_block(struct inode *inode, sector_t iblock, + struct buffer_head *bh_result, int create, int flag) +{ + return __get_data_block(inode, iblock, bh_result, create, flag); +} + +static int get_data_block_dio(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create) { - return __get_data_block(inode, iblock, bh_result, create, false); + return __get_data_block(inode, iblock, bh_result, create, + F2FS_GET_BLOCK_DIO); } -static int get_data_block_fiemap(struct inode *inode, sector_t iblock, +static int get_data_block_bmap(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create) { - return __get_data_block(inode, iblock, bh_result, create, true); + return __get_data_block(inode, iblock, bh_result, create, + F2FS_GET_BLOCK_BMAP); } static inline sector_t logical_to_blk(struct inode *inode, loff_t offset) @@ -745,7 +768,8 @@ next: memset(&map_bh, 0, sizeof(struct buffer_head)); map_bh.b_size = len; - ret = get_data_block_fiemap(inode, start_blk, &map_bh, 0); + ret = get_data_block(inode, start_blk, &map_bh, 0, + F2FS_GET_BLOCK_FIEMAP); if (ret) goto out; @@ -1530,7 +1554,7 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, if (iov_iter_rw(iter) == WRITE) __allocate_data_blocks(inode, offset, count); - err = blockdev_direct_IO(iocb, inode, iter, offset, get_data_block); + err = blockdev_direct_IO(iocb, inode, iter, offset, get_data_block_dio); if (err < 0 && iov_iter_rw(iter) == WRITE) f2fs_write_failed(mapping, offset + count); @@ -1618,7 +1642,7 @@ static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) if (err) return err; } - return generic_block_bmap(mapping, block, get_data_block); + return generic_block_bmap(mapping, block, get_data_block_bmap); } const struct address_space_operations f2fs_dblock_aops = { diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 00591f725744..51dfa8fcc505 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -375,6 +375,12 @@ struct f2fs_map_blocks { unsigned int m_flags; }; +/* for flag in get_data_block */ +#define F2FS_GET_BLOCK_READ 0 +#define F2FS_GET_BLOCK_DIO 1 +#define F2FS_GET_BLOCK_FIEMAP 2 +#define F2FS_GET_BLOCK_BMAP 3 + /* * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. */ |