The purpose of this patch set is the removal of grp->alloc_sem locks from block allocation paths. The resulting code is cleaner and should perform better in concurrent allocating tasks workloads. I ran several xfstests runs with these patches (4K and 1K block size). I tried several online resizes and verifyed that both in-core and on-disk group counters are correct. v2->v1: - fix silly bug in patch 4/5 that triggers BUG_ON(incore == NULL) - replace get_undo_access() with get_write_access() - ran xfstests with block size 1K (where 2 groups share a buddy page) [PATCH v2 1/5] ext4: move ext4_add_groupblocks() to mballoc.c [PATCH v2 2/5] ext4: implement ext4_add_groupblocks() by freeing blocks [PATCH v2 3/5] ext4: synchronize ext4_mb_init_group() with buddy page lock [PATCH v2 4/5] ext4: teach ext4_mb_init_cache() to skip uptodate buddy caches [PATCH v2 5/5] ext4: remove alloc_semp -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
