https://github.com/torvalds/linux
Revision ec4edd7b9d2038a97e0ba3fad8fc8492b0d12d35 authored by Kent Overstreet on 16 January 2024, 18:29:59 UTC, committed by Kent Overstreet on 21 January 2024, 18:27:10 UTC
bcachefs btree nodes are big - typically 256k - and btree roots are pinned in memory. As we're now up to 18 btrees, we now have significant memory overhead in mostly empty btree roots. And in the future we're going to start enforcing that certain btree node boundaries exist, to solve lock contention issues - analagous to XFS's AGIs. Thus, we need to start allocating smaller btree node buffers when we can. This patch changes code that refers to the filesystem constant c->opts.btree_node_size to refer to the btree node buffer size - btree_buf_bytes() - where appropriate. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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History 
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Tip revision: ec4edd7b9d2038a97e0ba3fad8fc8492b0d12d35 authored by Kent Overstreet on 16 January 2024, 18:29:59 UTC
bcachefs: Prep work for variable size btree node buffers
bcachefs: Prep work for variable size btree node buffers
Tip revision: ec4edd7
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | -rw-r--r-- | 20.1 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 151 bytes |
| .gitattributes | -rw-r--r-- | 105 bytes |
| .gitignore | -rw-r--r-- | 2.0 KB |
| .mailmap | -rw-r--r-- | 36.5 KB |
| .rustfmt.toml | -rw-r--r-- | 369 bytes |
| COPYING | -rw-r--r-- | 496 bytes |
| CREDITS | -rw-r--r-- | 100.2 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
| Kconfig | -rw-r--r-- | 555 bytes |
| MAINTAINERS | -rw-r--r-- | 714.2 KB |
| Makefile | -rw-r--r-- | 65.7 KB |
| README | -rw-r--r-- | 727 bytes |
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