Message ID | 20241010-tonyk-tmpfs-v6-9-79f0ae02e4c8@igalia.com |
---|---|
State | New |
Headers | show
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charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20241010-tonyk-tmpfs-v6-9-79f0ae02e4c8@igalia.com> References: <20241010-tonyk-tmpfs-v6-0-79f0ae02e4c8@igalia.com> In-Reply-To: <20241010-tonyk-tmpfs-v6-0-79f0ae02e4c8@igalia.com> To: Gabriel Krisman Bertazi <krisman@kernel.org>, Alexander Viro <viro@zeniv.linux.org.uk>, Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>, Theodore Ts'o <tytso@mit.edu>, Andreas Dilger <adilger.kernel@dilger.ca>, Hugh Dickins <hughd@google.com>, Andrew Morton <akpm@linux-foundation.org>, Jonathan Corbet <corbet@lwn.net>, smcv@collabora.com Cc: kernel-dev@igalia.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, =?utf-8?q?Andr=C3=A9_Almeid?= =?utf-8?q?a?= <andrealmeid@igalia.com>, Gabriel Krisman Bertazi <krisman@suse.de> X-Mailer: b4 0.14.2 |
Series |
tmpfs: Add case-insensitive support for tmpfs
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expand
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diff --git a/mm/shmem.c b/mm/shmem.c index 1c130a7d58ff3a4f5f920374414f9e7a29347ed9..eb1ea1f3b37cf7a4a11c3d11ad3f70ebb0e48d07 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -5543,3 +5543,40 @@ struct page *shmem_read_mapping_page_gfp(struct address_space *mapping, return page; } EXPORT_SYMBOL_GPL(shmem_read_mapping_page_gfp); + +#if defined(CONFIG_SYSFS) && defined(CONFIG_TMPFS) +#if IS_ENABLED(CONFIG_UNICODE) +static DEVICE_STRING_ATTR_RO(casefold, 0444, "supported"); +#endif + +static struct attribute *tmpfs_attributes[] = { +#if IS_ENABLED(CONFIG_UNICODE) + &dev_attr_casefold.attr.attr, +#endif + NULL +}; + +static const struct attribute_group tmpfs_attribute_group = { + .attrs = tmpfs_attributes, + .name = "features" +}; + +static struct kobject *tmpfs_kobj; + +static int __init tmpfs_sysfs_init(void) +{ + int ret; + + tmpfs_kobj = kobject_create_and_add("tmpfs", fs_kobj); + if (!tmpfs_kobj) + return -ENOMEM; + + ret = sysfs_create_group(tmpfs_kobj, &tmpfs_attribute_group); + if (ret) + kobject_put(tmpfs_kobj); + + return ret; +} + +fs_initcall(tmpfs_sysfs_init); +#endif /* CONFIG_SYSFS && CONFIG_TMPFS */