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commit 54064c4b6e9486ecc78ad16624ec029b79205d2d
Author: Milos Nikic <[email protected]>
Date: Fri Mar 27 23:12:22 2026 -0700
libdiskfs: Eliminate malloc from node-cache.c iteration.
This patch changes how diskfs_node_iterate() iterates the cache content.
Nodes contained in the cache now form a doubly linked list in addition
to being part of the hashtable.
At the cost of adding two pointers to the node structure we are able to
add an additional memory efficient way of iterating the cache and thus
we can now completely avoid malloc and copy during iteration.
Performance improvement becomes more visible the larger the cache is,
and it can even become measurable on very large node-cache size.
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Summary of changes:
libdiskfs/diskfs.h | 4 ++
libdiskfs/node-cache.c | 119 ++++++++++++++++++++++++++++++++-----------------
2 files changed, 83 insertions(+), 40 deletions(-)
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