vfs: remove duplicate code in get_fs_type()
save 14 bytes: text data bss dec hex filename 1354 32 4 1390 56e fs/filesystems.o.before text data bss dec hex filename 1340 32 4 1376 560 fs/filesystems.o Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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@ -253,24 +253,27 @@ static int __init proc_filesystems_init(void)
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module_init(proc_filesystems_init);
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module_init(proc_filesystems_init);
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#endif
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#endif
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struct file_system_type *get_fs_type(const char *name)
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static struct file_system_type *__get_fs_type(const char *name, int len)
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{
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{
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struct file_system_type *fs;
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struct file_system_type *fs;
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const char *dot = strchr(name, '.');
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unsigned len = dot ? dot - name : strlen(name);
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read_lock(&file_systems_lock);
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read_lock(&file_systems_lock);
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fs = *(find_filesystem(name, len));
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fs = *(find_filesystem(name, len));
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if (fs && !try_module_get(fs->owner))
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if (fs && !try_module_get(fs->owner))
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fs = NULL;
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fs = NULL;
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read_unlock(&file_systems_lock);
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read_unlock(&file_systems_lock);
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if (!fs && (request_module("%.*s", len, name) == 0)) {
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return fs;
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read_lock(&file_systems_lock);
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}
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fs = *(find_filesystem(name, len));
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if (fs && !try_module_get(fs->owner))
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struct file_system_type *get_fs_type(const char *name)
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fs = NULL;
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{
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read_unlock(&file_systems_lock);
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struct file_system_type *fs;
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}
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const char *dot = strchr(name, '.');
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int len = dot ? dot - name : strlen(name);
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fs = __get_fs_type(name, len);
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if (!fs && (request_module("%.*s", len, name) == 0))
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fs = __get_fs_type(name, len);
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if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
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if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
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put_filesystem(fs);
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put_filesystem(fs);
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