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Differential D29047

Modernize geom_stats_snapshot_get
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Authored by asomers on Mar 3 2021, 8:09 PM.
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phk
Commits
rGe0c4ed73f3a6: Modernize geom_stats_snapshot_get
rG774abe650b84: Modernize geom_stats_snapshot_get
rGf05b724ecb31: Modernize geom_stats_snapshot_get
Summary
  • A logically useless memset() is used to fault in some memory pages. Change it to explicit_bzero so the compiler won't eliminate it.
  • Eliminate the second memset. It made sense in the days of the Big Kernel Lock, but not in the days of fine-grained SMP and especially not in the days of VDSO.

MFC after: 2 weeks
Sponsored by: Axcient

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rS FreeBSD src repository - subversion
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Buildable 37547
Build 34436: arc lint + arc unit

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lib/
libgeom/
3 lines

Diff 85072

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lib/libgeom/geom_stats.c

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