kernel/git/next/linux-next.git/fs/f2fs, branch master

f2fs: parameterize block size and mask macros

2026-09-04T16:19:21+00:00

Block size constants, shift counts, masks, and page-to-block ratios were globally defined assuming a fixed 4KB block size. Parameterize F2FS_BLKSIZE, F2FS_BLKSIZE_BITS, F2FS_BLKSIZE_MASK, F2FS_BLKS_PER_PAGE, and CP_CHKSUM_OFFSET with struct f2fs_sb_info *sbi to reference sbi->blocksize, sbi->log_blocksize, and runtime masks. Update call sites across metadata operations, data I/O, file operations, garbage collection, inline data, and sysfs information. Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: describe node tree geometry dynamically

2026-09-04T16:19:04+00:00

The file indexing tree boundaries separating direct, indirect, and double-indirect node blocks depend on the number of data block addresses and node IDs contained in each node block. Parameterize index boundary macros (NODE_DIR1_BLOCK, NODE_DIR2_BLOCK, NODE_IND1_BLOCK, NODE_IND2_BLOCK, and NODE_DIND_BLOCK) and address capacity helpers (DEF_ADDRS_PER_BLOCK, NIDS_PER_BLOCK, cur_addrs_per_inode, addrs_per_page, and addrs_per_folio) with struct f2fs_sb_info *sbi. Update file mapping, block allocation, truncate, garbage collection, and recovery paths to compute indexing tree offsets from the runtime geometry. Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: parameterize byte and block conversion macros

2026-09-04T16:18:43+00:00

Byte-to-block and block-to-byte conversion helpers previously relied on global PAGE_SIZE, PAGE_SHIFT, or F2FS_BLKSIZE_BITS. Parameterize F2FS_BYTES_TO_BLK, F2FS_BLK_TO_BYTES, F2FS_BLK_END_BYTES, F2FS_BLK_ALIGN, and max_file_blocks with struct f2fs_sb_info *sbi using sbi->log_blocksize. Update all call sites across data mapping, file operations, fiemap queries, fsverity checks, NAT bitmap allocations, and truncate paths. Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: parameterize sector conversion macros

2026-09-04T16:18:23+00:00

Sector-to-block and block-to-sector conversion helpers previously assumed a fixed sector count per block derived from 4KB pages. Parameterize F2FS_LOG_SECTORS_PER_BLOCK, SECTOR_FROM_BLOCK, and SECTOR_TO_BLOCK with struct f2fs_sb_info *sbi, using sbi->log_sectors_per_block. Update all call sites across metadata I/O, data mapping, discard operations, and zoned block device reporting. Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: describe xattr block layout dynamically

2026-09-04T16:17:59+00:00

The usable capacity of dedicated on-disk extended attribute blocks and inline xattr regions scales with the filesystem block size. Parameterize VALID_XATTR_BLOCK_SIZE and MAX_INLINE_XATTR_SIZE to calculate usable xattr limits dynamically from sbi->blocksize rather than hardcoding PAGE_SIZE or DEF_ADDRS_PER_INODE. Update mount option consistency validation for inline_xattr_size to evaluate allowed boundaries dynamically against the runtime block size. Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: describe {i,d,id}node block layout dynamically

2026-09-04T16:17:23+00:00

An inode block ends with five i_nid entries followed by a node footer. Data block address pointers (i_addr[]) precede them. Similarly, direct and indirect node blocks contain data addresses or node IDs followed by a node footer at the end of the block. Describe struct f2fs_inode, struct direct_node, and struct indirect_node using flexible array members. Compute the locations of i_nid and node footers dynamically from the filesystem block size. Introduce F2FS_INODE_NIDS() and F2FS_NODE_FOOTER() helpers to access these tail fields. Compute sbi->addrs_per_inode, sbi->addrs_per_block, and sbi->nids_per_block in init_sb_info(), and update node management, file mapping, and recovery paths accordingly. Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: describe dentry block layout dynamically

2026-09-04T16:15:33+00:00

An on-disk directory block contains a bitmap, reserved padding, an array of directory entries (struct f2fs_dir_entry), and matching filename slots. A fixed compile-time structure couples their offsets to 4KB blocks and relies on static reserved-space definitions. Remove struct f2fs_dentry_block and compute region offsets (bitmap bytes, directory-entry count, and filename slots) dynamically from the filesystem block size. Access directory blocks through struct f2fs_dentry_ptr views initialized with the runtime geometry. Update directory operations, inline dentry handling, and recovery paths to use the dynamic block layout. No functional change is introduced for 4KB blocks. Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: describe orphan block layout dynamically

2026-09-04T16:14:53+00:00

An on-disk orphan block contains a variable-length array of 32-bit inode numbers followed by a fixed footer at the end of the block. A compile-time whole-block structure cannot represent the footer position when the block size varies at runtime. Remove struct f2fs_orphan_block, introduce struct f2fs_orphan_block_footer, and compute sbi->orphans_per_block dynamically in init_sb_info(). Add helpers to access the inode entry array and footer from a block buffer. Update orphan inode recovery, checkpointing, and mount paths to use the parameterized helpers. This preserves the on-disk format while decoupling orphan handling from compile-time constants. Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: describe NAT block layout dynamically

2026-09-04T16:14:28+00:00

A NAT block is a filesystem-block-sized array of struct f2fs_nat_entry elements. The compile-time NAT_ENTRY_PER_BLOCK definition hardcodes the NAT capacity to a 4KB block size. Replace the fixed array in struct f2fs_nat_block with a C flexible array member, and calculate sbi->nat_entries_per_block dynamically in init_sb_info(). Parameterize NAT geometry helpers (NAT_ENTRY_PER_BLOCK, NAT_BLOCK_OFFSET, f2fs_start_nid, NAT_BLK_CNT, and f2fs_nat_bitmap_size) with sbi. Update call sites across node management, checkpointing, GC, and sysfs. This is a layout-only change without behavioral differences for 4KB blocks. Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: describe SIT block layout dynamically

2026-09-04T16:13:49+00:00

An SIT block consists of an on-disk array of struct f2fs_sit_entry elements whose total capacity depends on the filesystem block size. The existing fixed SIT_ENTRY_PER_BLOCK macro hardcodes a 4KB block size. Convert the entries array in struct f2fs_sit_block into a C flexible array member, and calculate sbi->sit_entries_per_block dynamically in init_sb_info(). Parameterize SIT indexing helpers (SIT_ENTRY_PER_BLOCK, SIT_BLOCK_OFFSET, SIT_BLK_CNT, and f2fs_start_segno) to take struct f2fs_sb_info *sbi, and update all call sites across segment management, checkpointing, and mount. This is a layout-only change; valid 4KB filesystems retain identical runtime geometry and behavior. Signed-off-by: Kelvin Zhang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim