kernel.git/fs/btrfs/backref.c, branch master

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

2026-02-22T01:09:51Z

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

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

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

btrfs: remove unreachable return after btrfs_backref_panic() in btrfs_backref_finish_upper_links()

2026-02-03T06:49:12Z

The return statement after btrfs_backref_panic() is unreachable since btrfs_backref_panic() calls BUG() which never returns. Remove the return to unify it with the other calls to btrfs_backref_panic(). Signed-off-by: Zhen Ni Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: use bool type for btrfs_path members used as booleans

2025-11-24T21:42:25Z

Many fields of struct btrfs_path are used as booleans but their type is an unsigned int (of one 1 bit width to save space). Change the type to bool keeping the :1 suffix so that they combine with the previous u8 fields in order to save space. This makes the code more clear by using explicit true/false and more in line with the preferred style, preserving the size of the structure. Reviewed-by: Johannes Thumshirn Signed-off-by: Filipe Manana Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: declare free_ipath() via DEFINE_FREE()

2025-11-24T21:34:51Z

The free_ipath() function was being used as a cleanup function everywhere. Declare it via DEFINE_FREE() so we can use this function with the __free() helper. The name has also been adjusted so it's closer to the type's name. Signed-off-by: Miquel Sabaté Solà Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: use the key format macros when printing keys

2025-11-24T21:03:02Z

Change all locations that print a key to use the new macros to print them in order to ensure a consistent style and avoid repetitive code. Reviewed-by: Qu Wenruo Signed-off-by: Filipe Manana Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: add unlikely annotations to branches leading to EIO

2025-09-23T06:49:26Z

The unlikely() annotation is a static prediction hint that compiler may use to reorder code out of hot path. We use it elsewhere (namely tree-checker.c) for error branches that almost never happen, where EIO is one of them. Reviewed-by: Filipe Manana Signed-off-by: David Sterba

btrfs: add unlikely annotations to branches leading to EUCLEAN

2025-09-23T06:49:26Z

The unlikely() annotation is a static prediction hint that compiler may use to reorder code out of hot path. We use it elsewhere (namely tree-checker.c) for error branches that almost never happen, where EUCLEAN (a corruption) is one of them. Reviewed-by: Filipe Manana Signed-off-by: David Sterba

btrfs: fix typos in comments and strings

2025-09-23T06:49:16Z

Annual typo fixing pass. Strangely codespell found only about 30% of what is in this patch, the rest was done manually using text spellchecker with a custom dictionary of acceptable terms. Reviewed-by: Neal Gompa Signed-off-by: David Sterba

btrfs: set search_commit_root to false in iterate_inodes_from_logical()

2025-07-21T22:09:20Z

There's no point in checking at iterate_inodes_from_logical() if the path has search_commit_root set, the only caller never sets search_commit_root to true and it doesn't make sense for it ever to be true for the current use case (logical_to_ino ioctl). So stop checking for that and since the only caller allocates the path just for it to be used by iterate_inodes_from_logical(), move the path allocation into that function. Reviewed-by: Boris Burkov Signed-off-by: Filipe Manana Reviewed-by: David Sterba Signed-off-by: David Sterba