kernel/linux.git/fs/minix/inode.c, branch v7.0.10

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

minix: Add required sanity checking to minix_check_superblock()

2026-01-19T11:16:06+00:00

The fs/minix implementation of the minix filesystem does not currently support any other value for s_log_zone_size than 0. This is also the only value supported in util-linux; see mkfs.minix.c line 511. In addition, this patch adds some sanity checking for the other minix superblock fields, and moves the minix_blocks_needed() checks for the zmap and imap also to minix_check_super_block(). This also closes a related syzbot bug report. Signed-off-by: Jori Koolstra Link: https://patch.msgid.link/20251208153947.108343-1-jkoolstra@xs4all.nl Reviewed-by: Jan Kara Reported-by: syzbot+5ad0824204c7bf9b67f2@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=5ad0824204c7bf9b67f2 Signed-off-by: Christian Brauner

Merge tag 'vfs-6.19-rc1.minix' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2025-12-01T23:22:40+00:00

Pull minix fixes from Christian Brauner: "Fix two syzbot corruption bugs in the minix filesystem. Syzbot fuzzes filesystems by trying to mount and manipulate deliberately corrupted images. This should not lead to BUG_ONs and WARN_ONs for easy to detect corruptions. - Add error handling to minix filesystem for inode corruption detection, enabling the filesystem to report such corruptions cleanly. - Fix a drop_nlink warning in minix_rmdir() triggered by corrupted directory link counts. - Fix a drop_nlink warning in minix_rename() triggered by corrupted inode link counts" * tag 'vfs-6.19-rc1.minix' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: Fix a drop_nlink warning in minix_rename Fix a drop_nlink warning in minix_rmdir Add error handling to minix filesystem for inode corruption detection

Add error handling to minix filesystem for inode corruption detection

2025-11-05T12:45:21+00:00

We would like to provide early and specific warnings of filesystem corruption without running into generic WARN_ONs and BUG_ONs. Towards this goal, ext4, e.g., has a EFSCORRUPTED errno and a standardized inode corruption message format. This patch adds this errno and message format to the minix filesystem. Signed-off-by: Jori Koolstra Link: https://patch.msgid.link/20251104143005.3283980-2-jkoolstra@xs4all.nl Reviewed-by: Jan Kara Signed-off-by: Christian Brauner

Coccinelle-based conversion to use ->i_state accessors

2025-10-20T18:22:26+00:00

All places were patched by coccinelle with the default expecting that ->i_lock is held, afterwards entries got fixed up by hand to use unlocked variants as needed. The script: @@ expression inode, flags; @@ - inode->i_state & flags + inode_state_read(inode) & flags @@ expression inode, flags; @@ - inode->i_state &= ~flags + inode_state_clear(inode, flags) @@ expression inode, flag1, flag2; @@ - inode->i_state &= ~flag1 & ~flag2 + inode_state_clear(inode, flag1 | flag2) @@ expression inode, flags; @@ - inode->i_state |= flags + inode_state_set(inode, flags) @@ expression inode, flags; @@ - inode->i_state = flags + inode_state_assign(inode, flags) @@ expression inode, flags; @@ - flags = inode->i_state + flags = inode_state_read(inode) @@ expression inode, flags; @@ - READ_ONCE(inode->i_state) & flags + inode_state_read(inode) & flags Signed-off-by: Mateusz Guzik Signed-off-by: Christian Brauner

minixfs: Verify inode mode when loading from disk

2025-08-19T11:30:46+00:00

The inode mode loaded from corrupted disk can be invalid. Do like what commit 0a9e74051313 ("isofs: Verify inode mode when loading from disk") does. Reported-by: syzbot Closes: https://syzkaller.appspot.com/bug?extid=895c23f6917da440ed0d Signed-off-by: Tetsuo Handa Link: https://lore.kernel.org/ec982681-84b8-4624-94fa-8af15b77cbd2@I-love.SAKURA.ne.jp Signed-off-by: Christian Brauner

fs: change write_begin/write_end interface to take struct kiocb *

2025-07-16T12:48:18+00:00

Change the address_space_operations callbacks write_begin() and write_end() to take struct kiocb * as the first argument instead of struct file *. Update all affected function prototypes, implementations, call sites, and related documentation across VFS, filesystems, and block layer. Part of a series refactoring address_space_operations write_begin and write_end callbacks to use struct kiocb for passing write context and flags. Signed-off-by: Taotao Chen Link: https://lore.kernel.org/20250716093559.217344-4-chentaotao@didiglobal.com Signed-off-by: Christian Brauner

buffer: Convert __block_write_begin() to take a folio

2024-08-07T09:33:36+00:00

Almost all callers have a folio now, so change __block_write_begin() to take a folio and remove a call to compound_head(). Reviewed-by: Josef Bacik Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Christian Brauner

fs: Convert aops->write_begin to take a folio

2024-08-07T09:33:21+00:00

Convert all callers from working on a page to working on one page of a folio (support for working on an entire folio can come later). Removes a lot of folio->page->folio conversions. Reviewed-by: Josef Bacik Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Christian Brauner