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mdbx: clean copy for undo meta.

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Change-Id: I2abc1d701dc52caa268210489aa27803fd7a2c3b
This commit is contained in:
Leonid Yuriev 2019-12-19 19:49:58 +03:00
parent edbdb682d5
commit 0350fc41f8
1 changed files with 2 additions and 1 deletions
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src/elements/core.c
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@ -7679,6 +7679,7 @@ static int mdbx_sync_locked(MDBX_env *env, unsigned flags,
} }
} }
} else { } else {
const MDBX_meta undo_meta = *target;
const mdbx_filehandle_t fd = (env->me_dsync_fd != INVALID_HANDLE_VALUE) const mdbx_filehandle_t fd = (env->me_dsync_fd != INVALID_HANDLE_VALUE)
? env->me_dsync_fd ? env->me_dsync_fd
: env->me_lazy_fd; : env->me_lazy_fd;
@ -7689,7 +7690,7 @@ static int mdbx_sync_locked(MDBX_env *env, unsigned flags,
mdbx_debug("%s", "write failed, disk error?"); mdbx_debug("%s", "write failed, disk error?");
/* On a failure, the pagecache still contains the new data. /* On a failure, the pagecache still contains the new data.
* Try write some old data back, to prevent it from being used. */ * Try write some old data back, to prevent it from being used. */
mdbx_pwrite(fd, (void *)target, sizeof(MDBX_meta), mdbx_pwrite(fd, &undo_meta, sizeof(MDBX_meta),
(uint8_t *)target - env->me_map); (uint8_t *)target - env->me_map);
goto fail; goto fail;
} }