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/Linux-v6.1/Documentation/filesystems/ext4/
Ddirectory.rst427 ``struct dx_tail``, which contains the checksum. The ``limit`` and
429 necessary to fit the dx_tail into the block. If there is no space for
430 the dx_tail, the user is notified to run e2fsck -D to rebuild the
432 The dx_tail structure is 8 bytes long and looks like this:
453 use, and the tail block (dx_tail).
/Linux-v6.1/fs/ext4/
Dnamei.c288 struct dx_tail { struct
470 int count_offset, int count, struct dx_tail *t) in ext4_dx_csum()
477 int offset = offsetof(struct dx_tail, dt_checksum); in ext4_dx_csum()
491 struct dx_tail *t; in ext4_dx_csum_verify()
505 EXT4_BLOCK_SIZE(inode->i_sb) - sizeof(struct dx_tail)) { in ext4_dx_csum_verify()
509 t = (struct dx_tail *)(((struct dx_entry *)c) + limit); in ext4_dx_csum_verify()
520 struct dx_tail *t; in ext4_dx_csum_set()
534 EXT4_BLOCK_SIZE(inode->i_sb) - sizeof(struct dx_tail)) { in ext4_dx_csum_set()
538 t = (struct dx_tail *)(((struct dx_entry *)c) + limit); in ext4_dx_csum_set()
613 entry_space -= sizeof(struct dx_tail); in dx_root_limit()
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