jbd2: Add transaction.c from Linux

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Add the JBD2 journaling layer transaction management from the
Linux 6.18 kernel ext4 filesystem driver.

transaction.c handles:
- Transaction lifecycle (start, stop, restart)
- Handle management for filesystem operations
- Buffer attachment to transactions
- Transaction state machine
- Credit reservation and accounting
- Metadata and data buffer journaling

This is the core transaction API that ext4 uses to ensure
atomic updates to filesystem metadata.

Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: Simon Glass <simon.glass@canonical.com>

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This commit is contained in:

Simon Glass

2025-12-21 04:54:39 -07:00

parent c5bf8fcdf2

commit d2feaa01d8

1 changed files with 2751 additions and 0 deletions

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