X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/96e23fa3c6eabf8a6efebac24b740c5d4a2a1050..cb089e17fcc6bd4823bd919cce2b9e62631cd570:/lunaix-os/kernel/fs/mount.c?ds=sidebyside

diff --git a/lunaix-os/kernel/fs/mount.c b/lunaix-os/kernel/fs/mount.c
index 486d695..ca80238 100644
--- a/lunaix-os/kernel/fs/mount.c
+++ b/lunaix-os/kernel/fs/mount.c
@@ -2,9 +2,10 @@
 #include <lunaix/fs.h>
 #include <lunaix/mm/valloc.h>
 #include <lunaix/process.h>
+#include <lunaix/spike.h>
 #include <lunaix/types.h>
 
-static struct llist_header all_mnts = { .next = &all_mnts, .prev = &all_mnts };
+struct llist_header all_mnts = { .next = &all_mnts, .prev = &all_mnts };
 
 struct v_mount*
 vfs_create_mount(struct v_mount* parent, struct v_dnode* mnt_point)
@@ -18,12 +19,12 @@ vfs_create_mount(struct v_mount* parent, struct v_dnode* mnt_point)
     llist_append(&all_mnts, &mnt->list);
     mutex_init(&mnt->lock);
 
-    mnt_mkbusy(parent);
     mnt->parent = parent;
     mnt->mnt_point = mnt_point;
     mnt->super_block = mnt_point->super_block;
 
     if (parent) {
+        mnt_mkbusy(parent);
         mutex_lock(&mnt->parent->lock);
         llist_append(&parent->submnts, &mnt->sibmnts);
         mutex_unlock(&mnt->parent->lock);
@@ -68,30 +69,23 @@ __vfs_do_unmount(struct v_mount* mnt)
 void
 mnt_mkbusy(struct v_mount* mnt)
 {
-    while (mnt) {
-        mutex_lock(&mnt->lock);
-        mnt->busy_counter++;
-        mutex_unlock(&mnt->lock);
-
-        mnt = mnt->parent;
-    }
+    mutex_lock(&mnt->lock);
+    mnt->busy_counter++;
+    mutex_unlock(&mnt->lock);
 }
 
 void
 mnt_chillax(struct v_mount* mnt)
 {
-    while (mnt) {
-        mutex_lock(&mnt->lock);
-        mnt->busy_counter--;
-        mutex_unlock(&mnt->lock);
-
-        mnt = mnt->parent;
-    }
+    mutex_lock(&mnt->lock);
+    mnt->busy_counter--;
+    mutex_unlock(&mnt->lock);
 }
 
 int
 vfs_mount_root(const char* fs_name, struct device* device)
 {
+    extern struct v_dnode* vfs_sysroot;
     int errno = 0;
     if (vfs_sysroot->mnt && (errno = vfs_unmount_at(vfs_sysroot))) {
         return errno;
@@ -145,12 +139,12 @@ vfs_mount_at(const char* fs_name,
     }
 
     struct v_mount* parent_mnt = mnt_point->mnt;
-    struct v_superblock* sb = vfs_sb_alloc();
+    struct v_superblock *sb = vfs_sb_alloc(), *old_sb = mnt_point->super_block;
     sb->dev = device;
+    mnt_point->super_block = sb;
 
     int errno = 0;
     if (!(errno = fs->mount(sb, mnt_point))) {
-        mnt_point->super_block = sb;
         sb->fs = fs;
         sb->root = mnt_point;
 
@@ -167,6 +161,7 @@ vfs_mount_at(const char* fs_name,
     return errno;
 
 cleanup:
+    mnt_point->super_block = old_sb;
     vfs_sb_free(sb);
     return errno;
 }