diff options
| -rw-r--r-- | fs/f2fs/file.c | 51 |
1 files changed, 22 insertions, 29 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index dd50f30a2f57..fb8cc27d4cc6 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1158,10 +1158,11 @@ static int expand_inode_data(struct inode *inode, loff_t offset, loff_t len, int mode) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - pgoff_t index, pg_start, pg_end; + struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; + pgoff_t pg_end; loff_t new_size = i_size_read(inode); - loff_t off_start, off_end; - int ret = 0; + loff_t off_end; + int ret; ret = inode_newsize_ok(inode, (len + offset)); if (ret) @@ -1173,43 +1174,35 @@ static int expand_inode_data(struct inode *inode, loff_t offset, f2fs_balance_fs(sbi, true); - pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; - pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; - - off_start = offset & (PAGE_SIZE - 1); + pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; off_end = (offset + len) & (PAGE_SIZE - 1); - f2fs_lock_op(sbi); + map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; + map.m_len = pg_end - map.m_lblk; + if (off_end) + map.m_len++; - for (index = pg_start; index <= pg_end; index++) { - struct dnode_of_data dn; + ret = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); + if (ret) { + pgoff_t last_off; - if (index == pg_end && !off_end) - goto noalloc; + if (!map.m_len) + return ret; - set_new_dnode(&dn, inode, NULL, NULL, 0); - ret = f2fs_reserve_block(&dn, index); - if (ret) - break; -noalloc: - if (pg_start == pg_end) - new_size = offset + len; - else if (index == pg_start && off_start) - new_size = (loff_t)(index + 1) << PAGE_SHIFT; - else if (index == pg_end) - new_size = ((loff_t)index << PAGE_SHIFT) + - off_end; - else - new_size += PAGE_SIZE; + last_off = map.m_lblk + map.m_len - 1; + + /* update new size to the failed position */ + new_size = (last_off == pg_end) ? offset + len: + (loff_t)(last_off + 1) << PAGE_SHIFT; + } else { + new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; } - if (!(mode & FALLOC_FL_KEEP_SIZE) && - i_size_read(inode) < new_size) { + if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { i_size_write(inode, new_size); mark_inode_dirty(inode); update_inode_page(inode); } - f2fs_unlock_op(sbi); return ret; } |