Search

Hi,

there are mostly stabilization, refactoring and cleanup changes. There rest are minor performance optimizations due to caching or lock contention reduction and a few notable fixes.

Please pull, thanks.

Performance improvements:

• minor speedup in logging when repeatedly allocated structure is preallocated only once, improves latency and decreases lock contention
• minor throughput increase (+6%), reduced lock contention after clearing delayed allocation bits, applies to several common workload types
• skip full quota rescan if a new relation is added in the same transaction

Fixes:

• zstd fix for inline compressed file in subpage mode, updated version from the 6.8 time
• proper qgroup inheritance ioctl parameter validation
• more fiemap followup fixes after reduced locking done in 6.8
  • fix race when detecting delalloc ranges

Core changes:

• more debugging code
  • added assertions for a very rare crash in raid56 calculation
  • tree-checker dumps page state to g

Hi,

there are mainly core changes, refactoring and optimizations. Performance is improved in some areas, overall there may be a cumulative improvement due to refactoring that removed lookups in the IO path or simplified IO submission tracking.

No merge conflicts. Please pull, thanks.

Core:

• submit IO synchronously for fast checksums (crc32c and xxhash), remove high priority worker kthread
• read extent buffer in one go, simplify IO tracking, bio submission and locking
• remove additional tracking of redirtied extent buffers, originally added for zoned mode but actually not needed
• track ordered extent pointer in bio to avoid rbtree lookups during IO
• scrub, use recovered data stripes as cache to avoid unnecessary read
• in zoned mode, optimize logical to physical mappings of extents
• remove PageError handling, not set by VFS nor writeback
• cleanups, refactoring, better structure packing
• lots of error handling improvements
• more assertions, lockdep annotations