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Diffstat (limited to 'fs/filesystems.c')
-rw-r--r--fs/filesystems.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/fs/filesystems.c b/fs/filesystems.c
index d0e20ced62dd..1aa70260e6d1 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -179,7 +179,7 @@ static int fs_maxindex(void)
179/* 179/*
180 * Whee.. Weird sysv syscall. 180 * Whee.. Weird sysv syscall.
181 */ 181 */
182asmlinkage long sys_sysfs(int option, unsigned long arg1, unsigned long arg2) 182SYSCALL_DEFINE3(sysfs, int, option, unsigned long, arg1, unsigned long, arg2)
183{ 183{
184 int retval = -EINVAL; 184 int retval = -EINVAL;
185 185
@@ -253,24 +253,27 @@ static int __init proc_filesystems_init(void)
253module_init(proc_filesystems_init); 253module_init(proc_filesystems_init);
254#endif 254#endif
255 255
256struct file_system_type *get_fs_type(const char *name) 256static struct file_system_type *__get_fs_type(const char *name, int len)
257{ 257{
258 struct file_system_type *fs; 258 struct file_system_type *fs;
259 const char *dot = strchr(name, '.');
260 unsigned len = dot ? dot - name : strlen(name);
261 259
262 read_lock(&file_systems_lock); 260 read_lock(&file_systems_lock);
263 fs = *(find_filesystem(name, len)); 261 fs = *(find_filesystem(name, len));
264 if (fs && !try_module_get(fs->owner)) 262 if (fs && !try_module_get(fs->owner))
265 fs = NULL; 263 fs = NULL;
266 read_unlock(&file_systems_lock); 264 read_unlock(&file_systems_lock);
267 if (!fs && (request_module("%.*s", len, name) == 0)) { 265 return fs;
268 read_lock(&file_systems_lock); 266}
269 fs = *(find_filesystem(name, len)); 267
270 if (fs && !try_module_get(fs->owner)) 268struct file_system_type *get_fs_type(const char *name)
271 fs = NULL; 269{
272 read_unlock(&file_systems_lock); 270 struct file_system_type *fs;
273 } 271 const char *dot = strchr(name, '.');
272 int len = dot ? dot - name : strlen(name);
273
274 fs = __get_fs_type(name, len);
275 if (!fs && (request_module("%.*s", len, name) == 0))
276 fs = __get_fs_type(name, len);
274 277
275 if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) { 278 if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
276 put_filesystem(fs); 279 put_filesystem(fs);