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Kernel/Ext2FS: Surface Vector allocation failures in block allocation

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This commit is contained in:
Andreas Kling 2021-07-18 02:15:56 +02:00
parent 1f18558ee2
commit bd37840cf5
1 changed files with 3 additions and 4 deletions
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7
Kernel/FileSystem/Ext2FileSystem.cpp
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@ -1294,15 +1294,15 @@ bool Ext2FS::write_ext2_inode(InodeIndex inode, const ext2_inode& e2inode)
auto Ext2FS::allocate_blocks(GroupIndex preferred_group_index, size_t count) -> KResultOr<Vector<BlockIndex>> auto Ext2FS::allocate_blocks(GroupIndex preferred_group_index, size_t count) -> KResultOr<Vector<BlockIndex>>
{ {
MutexLocker locker(m_lock);
dbgln_if(EXT2_DEBUG, "Ext2FS: allocate_blocks(preferred group: {}, count {})", preferred_group_index, count); dbgln_if(EXT2_DEBUG, "Ext2FS: allocate_blocks(preferred group: {}, count {})", preferred_group_index, count);
if (count == 0) if (count == 0)
return Vector<BlockIndex> {}; return Vector<BlockIndex> {};
Vector<BlockIndex> blocks; Vector<BlockIndex> blocks;
dbgln_if(EXT2_DEBUG, "Ext2FS: allocate_blocks:"); if (!blocks.try_ensure_capacity(count))
blocks.ensure_capacity(count); return ENOMEM;
MutexLocker locker(m_lock);
auto group_index = preferred_group_index; auto group_index = preferred_group_index;
if (!group_descriptor(preferred_group_index).bg_free_blocks_count) { if (!group_descriptor(preferred_group_index).bg_free_blocks_count) {
@ -1310,7 +1310,6 @@ auto Ext2FS::allocate_blocks(GroupIndex preferred_group_index, size_t count) ->
} }
while (blocks.size() < count) { while (blocks.size() < count) {
bool found_a_group = false; bool found_a_group = false;
if (group_descriptor(group_index).bg_free_blocks_count) { if (group_descriptor(group_index).bg_free_blocks_count) {
found_a_group = true; found_a_group = true;