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Ext2FS: Lock the filesystem during initialization and during sync

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If we get preempted during initialization, we really don't want to try
doing a sync on a partially-initialized filesystem.
This commit is contained in:
Andreas Kling 2019-11-03 13:56:55 +01:00
parent 81c4dcadf1
commit 7e56cf1800
1 changed files with 2 additions and 0 deletions
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2
Kernel/FileSystem/Ext2FileSystem.cpp
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@ -68,6 +68,7 @@ const ext2_group_desc& Ext2FS::group_descriptor(GroupIndex group_index) const
bool Ext2FS::initialize() bool Ext2FS::initialize()
{ {
LOCKER(m_lock);
bool success = const_cast<DiskDevice&>(device()).read_blocks(2, 1, (u8*)&m_super_block); bool success = const_cast<DiskDevice&>(device()).read_blocks(2, 1, (u8*)&m_super_block);
ASSERT(success); ASSERT(success);
@ -484,6 +485,7 @@ void Ext2FS::flush_block_group_descriptor_table()
void Ext2FS::flush_writes() void Ext2FS::flush_writes()
{ {
LOCKER(m_lock);
if (m_super_block_dirty) { if (m_super_block_dirty) {
flush_super_block(); flush_super_block();
m_super_block_dirty = false; m_super_block_dirty = false;