diff options
Diffstat (limited to 'fs/ext4/indirect.c')
| -rw-r--r-- | fs/ext4/indirect.c | 40 |
1 files changed, 14 insertions, 26 deletions
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c index b8d5d351e24f..87b30cd357e7 100644 --- a/fs/ext4/indirect.c +++ b/fs/ext4/indirect.c @@ -624,7 +624,7 @@ cleanup: partial--; } out: - trace_ext4_ind_map_blocks_exit(inode, map, err); + trace_ext4_ind_map_blocks_exit(inode, flags, map, err); return err; } @@ -675,11 +675,6 @@ ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb, retry: if (rw == READ && ext4_should_dioread_nolock(inode)) { - if (unlikely(atomic_read(&EXT4_I(inode)->i_unwritten))) { - mutex_lock(&inode->i_mutex); - ext4_flush_unwritten_io(inode); - mutex_unlock(&inode->i_mutex); - } /* * Nolock dioread optimization may be dynamically disabled * via ext4_inode_block_unlocked_dio(). Check inode's state @@ -779,27 +774,18 @@ int ext4_ind_calc_metadata_amount(struct inode *inode, sector_t lblock) return (blk_bits / EXT4_ADDR_PER_BLOCK_BITS(inode->i_sb)) + 1; } -int ext4_ind_trans_blocks(struct inode *inode, int nrblocks, int chunk) +/* + * Calculate number of indirect blocks touched by mapping @nrblocks logically + * contiguous blocks + */ +int ext4_ind_trans_blocks(struct inode *inode, int nrblocks) { - int indirects; - - /* if nrblocks are contiguous */ - if (chunk) { - /* - * With N contiguous data blocks, we need at most - * N/EXT4_ADDR_PER_BLOCK(inode->i_sb) + 1 indirect blocks, - * 2 dindirect blocks, and 1 tindirect block - */ - return DIV_ROUND_UP(nrblocks, - EXT4_ADDR_PER_BLOCK(inode->i_sb)) + 4; - } /* - * if nrblocks are not contiguous, worse case, each block touch - * a indirect block, and each indirect block touch a double indirect - * block, plus a triple indirect block + * With N contiguous data blocks, we need at most + * N/EXT4_ADDR_PER_BLOCK(inode->i_sb) + 1 indirect blocks, + * 2 dindirect blocks, and 1 tindirect block */ - indirects = nrblocks * 2 + 1; - return indirects; + return DIV_ROUND_UP(nrblocks, EXT4_ADDR_PER_BLOCK(inode->i_sb)) + 4; } /* @@ -940,11 +926,13 @@ static int ext4_clear_blocks(handle_t *handle, struct inode *inode, __le32 *last) { __le32 *p; - int flags = EXT4_FREE_BLOCKS_FORGET | EXT4_FREE_BLOCKS_VALIDATED; + int flags = EXT4_FREE_BLOCKS_VALIDATED; int err; if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) - flags |= EXT4_FREE_BLOCKS_METADATA; + flags |= EXT4_FREE_BLOCKS_FORGET | EXT4_FREE_BLOCKS_METADATA; + else if (ext4_should_journal_data(inode)) + flags |= EXT4_FREE_BLOCKS_FORGET; if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), block_to_free, count)) { |