Baokun Li 3938fc29f8 ext4: support large block size in ext4_mb_get_buddy_page_lock() ...

Currently, ext4_mb_get_buddy_page_lock() uses blocks_per_page to calculate
folio index and offset. However, when blocksize is larger than PAGE_SIZE,
blocks_per_page becomes zero, leading to a potential division-by-zero bug.

To support BS > PS, use bytes to compute folio index and offset within
folio to get rid of blocks_per_page.

Also, since ext4_mb_get_buddy_page_lock() already fully supports folio,
rename it to ext4_mb_get_buddy_folio_lock().

Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Message-ID: <20251121090654.631996-13-libaokun@huaweicloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

2025-11-28 22:35:27 -05:00

..

.kunitconfig

…

acl.c

ext4: convert to ctime accessor functions

2023-07-24 10:29:54 +02:00

acl.h

Revert "ext4: apply umask if ACL support is disabled"

2024-05-02 18:25:39 -04:00

balloc.c

fs/ext4: fix typo in comment

2025-11-26 17:13:34 -05:00

bitmap.c

ext4: remove sbi argument from ext4_chksum()

2025-05-20 10:31:12 -04:00

block_validity.c

ext4: make block validity check resistent to sb bh corruption

2025-04-12 22:01:37 -04:00

crypto.c

ext4: move crypt info pointer to fs-specific part of inode

2025-08-21 13:58:07 +02:00

dir.c

ext4: support large block size in ext4_readdir()

2025-11-28 22:35:26 -05:00

ext4_extents.h

ext4: remove unused EXT_STATS macro from ext4_extents.h

2025-07-12 19:01:38 -04:00

ext4_jbd2.c

ext4: wait for ongoing I/O to complete before freeing blocks

2025-10-10 13:34:35 -04:00

ext4_jbd2.h

ext4/jbd2: convert jbd2_journal_blocks_per_page() to support large folio

2025-05-20 10:31:12 -04:00

ext4.h

ext4: add EXT4_LBLK_TO_PG and EXT4_PG_TO_LBLK for block/page conversion

2025-11-28 22:35:27 -05:00

extents_status.c

ext4: make ext4_es_lookup_extent() pass out the extent seq counter

2025-11-06 10:44:39 -05:00

extents_status.h

ext4: make ext4_es_lookup_extent() pass out the extent seq counter

2025-11-06 10:44:39 -05:00

extents.c

ext4: add EXT4_LBLK_TO_B macro for logical block to bytes conversion

2025-11-28 22:35:27 -05:00

fast_commit.c

ext4: increase IO priority of fastcommit

2025-09-25 14:56:31 -04:00

fast_commit.h

ext4 fast_commit: make use of name_snapshot primitives

2025-01-27 19:24:43 -05:00

file.c

ext4: fix checks for orphan inodes

2025-09-26 08:36:08 -04:00

fsmap.c

ext4: correctly handle queries for metadata mappings

2025-09-25 23:04:48 -04:00

fsmap.h

…

fsync.c

ext4: add ext4_emergency_state() helper function

2025-03-13 10:16:34 -04:00

hash.c

ext4: make error code in __ext4fs_dirhash() consistent.

2025-11-06 10:32:33 -05:00

ialloc.c

ext4: clear i_state_flags when alloc inode

2025-11-26 17:06:09 -05:00

indirect.c

ext4: add ext4_sb_bread_nofail() helper function for ext4_free_branches()

2025-09-25 14:36:54 -04:00

inline.c

ext4: add i_data_sem protection in ext4_destroy_inline_data_nolock()

2025-11-26 17:06:24 -05:00

inode-test.c

ext4: add missing MODULE_DESCRIPTION()

2024-07-05 16:07:24 -04:00

inode.c

ext4: add EXT4_LBLK_TO_B macro for logical block to bytes conversion

2025-11-28 22:35:27 -05:00

ioctl.c

ext4: check if mount_opts is NUL-terminated in ext4_ioctl_set_tune_sb()

2025-11-26 17:05:39 -05:00

Kconfig

ext4: remove obsolete EXT3 config options

2025-09-25 14:47:05 -04:00

Makefile

…

mballoc-test.c

ext4: convert free groups order lists to xarrays

2025-07-25 09:14:17 -04:00

mballoc.c

ext4: support large block size in ext4_mb_get_buddy_page_lock()

2025-11-28 22:35:27 -05:00

mballoc.h

ext4: refactor choose group to scan group

2025-07-25 09:14:17 -04:00

migrate.c

ext4: fix i_data_sem unlock order in ext4_ind_migrate()

2024-09-03 22:14:17 -04:00

mmp.c

ext4: replace min/max nesting with clamp()

2025-09-25 14:35:21 -04:00

move_extent.c

ext4: add two trace points for moving extents

2025-11-06 10:44:39 -05:00

namei.c

ext4: add EXT4_LBLK_TO_B macro for logical block to bytes conversion

2025-11-28 22:35:27 -05:00

orphan.c

ext4: align max orphan file size with e2fsprogs limit

2025-11-26 17:13:34 -05:00

page-io.c

ext4: remove redundant __GFP_NOWARN

2025-08-12 23:15:05 -04:00

readpage.c

ext4: make ext4_mpage_readpages() support large folios

2025-05-20 10:31:11 -04:00

resize.c

ext4: remove sb argument from ext4_superblock_csum()

2025-05-20 10:31:12 -04:00

super.c

ext4: support large block size in ext4_calculate_overhead()

2025-11-28 22:35:26 -05:00

symlink.c

ext4_get_link(): fix breakage in RCU mode

2024-02-25 02:10:32 -05:00

sysfs.c

ext4: Make sb update interval tunable

2025-03-21 01:12:33 -04:00

truncate.h

…

verity.c

ext4: add EXT4_LBLK_TO_B macro for logical block to bytes conversion

2025-11-28 22:35:27 -05:00

xattr_hurd.c

fs: port xattr to mnt_idmap

2023-01-19 09:24:28 +01:00

xattr_security.c

fs: port xattr to mnt_idmap

2023-01-19 09:24:28 +01:00

xattr_trusted.c

fs: port xattr to mnt_idmap

2023-01-19 09:24:28 +01:00

xattr_user.c

fs: port xattr to mnt_idmap

2023-01-19 09:24:28 +01:00

xattr.c

ext4: xattr: fix null pointer deref in ext4_raw_inode()

2025-11-13 08:33:22 -05:00

xattr.h

ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()

2025-03-18 00:15:19 -04:00