"Jeff Hostetler via GitGitGadget" <gitgitgadget@xxxxxxxxx> writes:
> From: Jeff Hostetler <jeffhostetler@xxxxxxxxxx>
>
> Refactor code in the fsmonitor_refresh_callback() call chain dealing
> with invalidating the CE_FSMONITOR_VALID bit and add a trace message.
>
> During the refresh, we clear the CE_FSMONITOR_VALID bit in response to
> data from the FSMonitor daemon (so that a later phase will lstat() and
> verify the true state of the file).
>
> Create a new function to clear the bit and add some unique tracing for
> it to help debug edge cases.
>
> This is similar to the existing `mark_fsmonitor_invalid()` function,
> but we don't need the extra stuff that it does.
>
> Signed-off-by: Jeff Hostetler <jeffhostetler@xxxxxxxxxx>
> ---
> fsmonitor.c | 20 +++++++++++++++++---
> 1 file changed, 17 insertions(+), 3 deletions(-)
>
> diff --git a/fsmonitor.c b/fsmonitor.c
> index ac638a61c00..0667a8c297c 100644
> --- a/fsmonitor.c
> +++ b/fsmonitor.c
> @@ -187,6 +187,20 @@ static int query_fsmonitor_hook(struct repository *r,
> static size_t handle_path_with_trailing_slash(
> struct index_state *istate, const char *name, int pos);
>
> +/*
> + * Invalidate the FSM bit on this CE. This is like mark_fsmonitor_invalid()
> + * but we've already handled the untracked-cache and I want a different
> + * trace message.
> + */
"I want" -> "want" perhaps.
More importantly, when new developers come and want to touch this
file in the future, how would they choose which one to call? Would
it make a better comment if we rewrote the above for such future
developers as intended audiences?
> +static void invalidate_ce_fsm(struct cache_entry *ce)
> +{
> + if (ce->ce_flags & CE_FSMONITOR_VALID)
> + trace_printf_key(&trace_fsmonitor,
> + "fsmonitor_refresh_callback INV: '%s'",
> + ce->name);
> + ce->ce_flags &= ~CE_FSMONITOR_VALID;
> +}
> +
> /*
> * Use the name-hash to do a case-insensitive cache-entry lookup with
> * the pathname and invalidate the cache-entry.
> @@ -224,7 +238,7 @@ static size_t handle_using_name_hash_icase(
>
> untracked_cache_invalidate_trimmed_path(istate, ce->name, 0);
>
> - ce->ce_flags &= ~CE_FSMONITOR_VALID;
> + invalidate_ce_fsm(ce);
> return 1;
> }
>
> @@ -316,7 +330,7 @@ static size_t handle_path_without_trailing_slash(
> * cache-entry with the same pathname, nor for a cone
> * at that directory. (That is, assume no D/F conflicts.)
> */
> - istate->cache[pos]->ce_flags &= ~CE_FSMONITOR_VALID;
> + invalidate_ce_fsm(istate->cache[pos]);
> return 1;
> } else {
> size_t nr_in_cone;
> @@ -394,7 +408,7 @@ static size_t handle_path_with_trailing_slash(
> for (i = pos; i < istate->cache_nr; i++) {
> if (!starts_with(istate->cache[i]->name, name))
> break;
> - istate->cache[i]->ce_flags &= ~CE_FSMONITOR_VALID;
> + invalidate_ce_fsm(istate->cache[i]);
> nr_in_cone++;
> }
Nice.
