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Kernel: Handle OOM in DiskCache when mounting Ext2 filesystems

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Create the disk cache up front, so we can verify it succeeds.
Make the KBuffer allocation fail-able, so we can properly handle
failure when the user asks up to mount a Ext2 filesystem under
OOM conditions.
This commit is contained in:
Brian Gianforcaro
2021-08-01 04:33:06 -07:00
committed by Andreas Kling
parent 187c086270
commit a6db2f985a
Notes: sideshowbarker 2024-07-18 07:31:41 +09:00 
Author: https://github.com/bgianfo
Commit: https://github.com/SerenityOS/serenity/commit/a6db2f985a4
Pull-request: https://github.com/SerenityOS/serenity/pull/9154
Reviewed-by: https://github.com/alimpfard ✅
3 changed files with 36 additions and 12 deletions
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Kernel/FileSystem/BlockBasedFileSystem.h
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@@ -15,6 +15,7 @@ public:
TYPEDEF_DISTINCT_ORDERED_ID(u64, BlockIndex);
virtual ~BlockBasedFileSystem() override;
virtual bool initialize() override;
u64 logical_block_size() const { return m_logical_block_size; };