linux-kernel - Re: [PATCH v4 05/36] fs: Convert alloc_inode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Mon, 26 Feb 2024 16:44:51 +0100
From: Vlastimil Babka <vbabka@...e.cz>
To: Suren Baghdasaryan <surenb@...gle.com>, akpm@...ux-foundation.org
Cc: kent.overstreet@...ux.dev, mhocko@...e.com, hannes@...xchg.org,
 roman.gushchin@...ux.dev, mgorman@...e.de, dave@...olabs.net,
 willy@...radead.org, liam.howlett@...cle.com,
 penguin-kernel@...ove.sakura.ne.jp, corbet@....net, void@...ifault.com,
 peterz@...radead.org, juri.lelli@...hat.com, catalin.marinas@....com,
 will@...nel.org, arnd@...db.de, tglx@...utronix.de, mingo@...hat.com,
 dave.hansen@...ux.intel.com, x86@...nel.org, peterx@...hat.com,
 david@...hat.com, axboe@...nel.dk, mcgrof@...nel.org, masahiroy@...nel.org,
 nathan@...nel.org, dennis@...nel.org, tj@...nel.org, muchun.song@...ux.dev,
 rppt@...nel.org, paulmck@...nel.org, pasha.tatashin@...een.com,
 yosryahmed@...gle.com, yuzhao@...gle.com, dhowells@...hat.com,
 hughd@...gle.com, andreyknvl@...il.com, keescook@...omium.org,
 ndesaulniers@...gle.com, vvvvvv@...gle.com, gregkh@...uxfoundation.org,
 ebiggers@...gle.com, ytcoode@...il.com, vincent.guittot@...aro.org,
 dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
 bristot@...hat.com, vschneid@...hat.com, cl@...ux.com, penberg@...nel.org,
 iamjoonsoo.kim@....com, 42.hyeyoo@...il.com, glider@...gle.com,
 elver@...gle.com, dvyukov@...gle.com, shakeelb@...gle.com,
 songmuchun@...edance.com, jbaron@...mai.com, rientjes@...gle.com,
 minchan@...gle.com, kaleshsingh@...gle.com, kernel-team@...roid.com,
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 iommu@...ts.linux.dev, linux-arch@...r.kernel.org,
 linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
 linux-modules@...r.kernel.org, kasan-dev@...glegroups.com,
 cgroups@...r.kernel.org, Alexander Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH v4 05/36] fs: Convert alloc_inode_sb() to a macro

On 2/21/24 20:40, Suren Baghdasaryan wrote:
> From: Kent Overstreet <kent.overstreet@...ux.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@...ux.dev>
> Signed-off-by: Suren Baghdasaryan <surenb@...gle.com>
> Cc: Alexander Viro <viro@...iv.linux.org.uk>
> Reviewed-by: Kees Cook <keescook@...omium.org>
> ---
>  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 023f37c60709..08d8246399c3 100644
> --- a/include/linux/fs.h
> +++ b/include/linux/fs.h
> @@ -3010,11 +3010,7 @@ 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)

A __always_inline wouldn't have the same effect? Just wondering.

> -{
> -	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)