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ircd::db: Check for posix_fadvise(); implement InvalidateCache for environment if not direct IO.

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This commit is contained in:
Jason Volk 2018-11-02 01:30:15 -07:00
parent 1d03747da3
commit 49bad9f01d
2 changed files with 24 additions and 2 deletions
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3
configure.ac
View file

@ -657,7 +657,8 @@ AC_CHECK_FUNCS([ \
strlcat \
strnlen \
snprintf \
vsnprintf
vsnprintf \
posix_fadvise \
])
AC_SEARCH_LIBS(dlinfo, dl, AC_DEFINE(HAVE_DLINFO, 1, [Define if you have dlinfo]))

23
ircd/db.cc
View file

@ -4677,7 +4677,13 @@ noexcept try
};
#endif
//syscall(::posix_fadvise, fd, offset, length, FADV_DONTNEED);
if(opts.direct)
return Status::OK();
#if defined(HAVE_POSIX_FADVISE) && defined(FADV_DONTNEED)
syscall(::posix_fadvise, fd, offset, length, FADV_DONTNEED);
#endif
return Status::OK();
}
catch(const fs::error &e)
@ -5109,6 +5115,7 @@ noexcept
#endif
this->hint = hint;
//TODO: fcntl F_SET_FILE_RW_HINT
}
rocksdb::Env::WriteLifeTimeHint
@ -5423,6 +5430,13 @@ noexcept try
};
#endif
if(opts.direct)
return Status::OK();
#if defined(HAVE_POSIX_FADVISE) && defined(FADV_DONTNEED)
syscall(::posix_fadvise, fd, offset, length, FADV_DONTNEED);
#endif
return Status::OK();
}
catch(const fs::error &e)
@ -5673,6 +5687,13 @@ noexcept
};
#endif
if(opts.direct)
return Status::OK();
#if defined(HAVE_POSIX_FADVISE) && defined(FADV_DONTNEED)
syscall(::posix_fadvise, fd, offset, length, FADV_DONTNEED);
#endif
return Status::OK();
}