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mdbx: drop the previous temporary workaround for unified page/buffer cache incoherency.

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Related to https://github.com/erthink/libmdbx/issues/269.
This commit is contained in:
Леонид Юрьев (Leonid Yuriev) 2022-03-06 13:20:20 +03:00
parent 00ed61c685
commit 93cf99a07c
1 changed files with 0 additions and 16 deletions
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16
src/core.c
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@ -12922,22 +12922,6 @@ __cold int mdbx_env_open(MDBX_env *env, const char *pathname,
goto bailout;
}
}
#elif defined(__linux__) || defined(__gnu_linux__)
/* Temporary workaround for Linux 4.19 (at least) kernel's flaw.
* See https://github.com/erthink/libmdbx/issues/269 */
if ((flags & MDBX_WRITEMAP) == 0 &&
mdbx_linux_kernel_version < 0x05040000) {
if (flags & MDBX_ACCEDE)
flags |= MDBX_WRITEMAP;
else {
mdbx_debug_log(MDBX_LOG_ERROR, __func__, __LINE__,
"Linux prior to 5.4 requires MDBX_WRITEMAP because "
"of a flaw of unified page/buffer cache. "
"See https://github.com/erthink/libmdbx/issues/269\n");
rc = ENOPROTOOPT;
goto bailout;
}
}
#endif /* MDBX_MMAP_INCOHERENT_FILE_WRITE */
}