From: Kent Overstreet <kent.overstreet@linux.dev>

We're introducing alloc tagging, which tracks memory allocations by
callsite. Converting alloc_inode_sb() to a macro means allocations will
be tracked by its caller, which is a bit more useful.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
---
 include/linux/fs.h | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index ed5966a70495..7794b4182bac 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3013,11 +3013,7 @@ int setattr_should_drop_sgid(struct mnt_idmap *idmap,
  * This must be used for allocating filesystems specific inodes to set
  * up the inode reclaim context correctly.
  */
-static inline void *
-alloc_inode_sb(struct super_block *sb, struct kmem_cache *cache, gfp_t gfp)
-{
-	return kmem_cache_alloc_lru(cache, &sb->s_inode_lru, gfp);
-}
+#define alloc_inode_sb(_sb, _cache, _gfp) kmem_cache_alloc_lru(_cache, &_sb->s_inode_lru, _gfp)
 
 extern void __insert_inode_hash(struct inode *, unsigned long hashval);
 static inline void insert_inode_hash(struct inode *inode)
-- 
2.43.0.687.g38aa6559b0-goog

On Mon, Feb 12, 2024 at 01:38:49PM -0800, Suren Baghdasaryan wrote:
> From: Kent Overstreet <kent.overstreet@linux.dev>
> 
> We're introducing alloc tagging, which tracks memory allocations by
> callsite. Converting alloc_inode_sb() to a macro means allocations will
> be tracked by its caller, which is a bit more useful.
> 
> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Yup, getting these all doing direct calls will be nice.

Reviewed-by: Kees Cook <keescook@chromium.org>

-- 
Kees Cook