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lib_log: remove less used code 

Do not spend resources on sophisticated but
expensive trials.
This commit is contained in:
Thomas Schoebel-Theuer 2023-05-08 11:42:14 +02:00
parent 1ce2055b10
commit 0b6b45bfd9
1 changed files with 0 additions and 35 deletions
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35
kernel/lib_log.c
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@ -678,7 +678,6 @@ int _check_crc(struct log_header *lh,
bool is_invalid = false;
bool did_simple_retry = false;
int did_iterative_retry = 0;
int bit = 0;
int res;
retry:
@ -723,40 +722,6 @@ int _check_crc(struct log_header *lh,
smp_mb();
goto retry;
}
/* when simple retry failed: try the painful iterative method */
if (unlikely(res)) {
/* We are desperate. We want to recover as much data
* as possible. Performance does no longer matter.
* Try to _wildly_ _guess_ what check_flags might by usable.
*/
if (!did_iterative_retry) {
bit = find_first_bit((void *)&usable_digest_mask,
sizeof(usable_digest_mask));
} else if (bit >= _MREF_COMPRESS_LAST) {
goto failed;
} else {
int next_bit =
find_next_bit((void *)&usable_digest_mask,
sizeof(usable_digest_mask),
bit + 1);
if (next_bit <= bit)
goto failed;
bit = next_bit;
}
if (bit >= 32)
goto failed;
check_flags = (1 << bit);
if (!(check_flags & usable_digest_mask))
goto failed;
did_iterative_retry++;
cond_resched();
/* safeguard any suspected coherence problems */
smp_mb();
goto retry;
failed:
MARS_WRN("ITERATIVE RETRY %d failed\n",
did_iterative_retry);
}
if (is_invalid) {
if (!*mars_error_code)
*mars_error_code = -MARS_ERR_CRC_FLAGS;