Changeset 07deef5 in mainline for uspace/srv/vfs/vfs_register.c

Timestamp:

2008-03-10T19:57:23Z (17 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

8ad8e49

Parents:

088cecc

Message:

Fibril serialization is required when two file systems register contemporarily.

File:

• uspace/srv/vfs/vfs_register.c (modified) (7 diffs)

uspace/srv/vfs/vfs_register.c

@@ -206 +206 @@
                 
         futex_down(&fs_head_futex);
+        fibril_inc_sercount();
 
         /*
@@ -215 +216 @@
                  */
                 dprintf("FS is already registered.\n");
+                fibril_dec_sercount();
                 futex_up(&fs_head_futex);
                 free(fs_info);
@@ -227 +229 @@
         dprintf("Inserting FS into the list of registered file systems.\n");
         list_append(&fs_info->fs_link, &fs_head);
-
+        
         /*
          * Now we want the client to send us the IPC_M_CONNECT_TO_ME call so
@@ -237 +239 @@
                 dprintf("Unexpected call, method = %d\n", IPC_GET_METHOD(call));
                 list_remove(&fs_info->fs_link);
+                fibril_dec_sercount();
                 futex_up(&fs_head_futex);
                 free(fs_info);
@@ -255 +258 @@
                 dprintf("Unexpected call, method = %d\n", IPC_GET_METHOD(call));
                 list_remove(&fs_info->fs_link);
+                fibril_dec_sercount();
                 futex_up(&fs_head_futex);
                 ipc_hangup(fs_info->phone);
@@ -269 +273 @@
                 dprintf("Client suggests wrong size of PFB, size = %d\n", size);
                 list_remove(&fs_info->fs_link);
+                fibril_dec_sercount();
                 futex_up(&fs_head_futex);
                 ipc_hangup(fs_info->phone);
@@ -293 +298 @@
         ipc_answer_1(rid, EOK, (ipcarg_t) fs_info->fs_handle);
         
+        fibril_dec_sercount();
         futex_up(&fs_head_futex);