From: Jan Kara <jack@suse.cz>
To: Mateusz Guzik <mjguzik@gmail.com>
Cc: brauner@kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
hughd@google.com, linux-ext4@vger.kernel.org, tytso@mit.edu,
linux-mm@kvack.org
Subject: Re: [PATCH v3 3/3] tmpfs: use inode_set_cached_link()
Date: Thu, 21 Nov 2024 12:59:32 +0100 [thread overview]
Message-ID: <20241121115932.bwm64mrghjc3nxtk@quack3> (raw)
In-Reply-To: <20241120112037.822078-4-mjguzik@gmail.com>
On Wed 20-11-24 12:20:36, Mateusz Guzik wrote:
> Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Looks good. Feel free to add:
Reviewed-by: Jan Kara <jack@suse.cz>
Honza
> ---
> mm/shmem.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/mm/shmem.c b/mm/shmem.c
> index c7881e16f4be..135f38eb2ff1 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -3868,6 +3868,7 @@ static int shmem_symlink(struct mnt_idmap *idmap, struct inode *dir,
> int len;
> struct inode *inode;
> struct folio *folio;
> + char *link;
>
> len = strlen(symname) + 1;
> if (len > PAGE_SIZE)
> @@ -3889,12 +3890,13 @@ static int shmem_symlink(struct mnt_idmap *idmap, struct inode *dir,
>
> inode->i_size = len-1;
> if (len <= SHORT_SYMLINK_LEN) {
> - inode->i_link = kmemdup(symname, len, GFP_KERNEL);
> - if (!inode->i_link) {
> + link = kmemdup(symname, len, GFP_KERNEL);
> + if (!link) {
> error = -ENOMEM;
> goto out_remove_offset;
> }
> inode->i_op = &shmem_short_symlink_operations;
> + inode_set_cached_link(inode, link, len - 1);
> } else {
> inode_nohighmem(inode);
> inode->i_mapping->a_ops = &shmem_aops;
> --
> 2.43.0
>
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
next prev parent reply other threads:[~2024-11-21 11:59 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-20 11:20 [PATCH v3 0/3] symlink length caching Mateusz Guzik
2024-11-20 11:20 ` [PATCH v3 1/3] vfs: support caching symlink lengths in inodes Mateusz Guzik
2024-11-21 10:12 ` Christian Brauner
2024-11-21 13:56 ` Mateusz Guzik
2024-11-22 1:56 ` Dave Chinner
2024-11-20 11:20 ` [PATCH v3 2/3] ext4: use inode_set_cached_link() Mateusz Guzik
2024-11-21 11:58 ` Jan Kara
2024-11-20 11:20 ` [PATCH v3 3/3] tmpfs: " Mateusz Guzik
2024-11-21 11:59 ` Jan Kara [this message]
2024-11-21 12:34 ` [PATCH v3 0/3] symlink length caching Christian Brauner
2024-11-21 14:16 ` Jeff Layton
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