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Added lfsr_mid_isopened to dedup zombie/orphan checks

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I think this also makes the logic easier to read. Less temporary
variables.

            code          stack
  before:  33816           2944
  after:   33812 (-0.0%)   2944 (+0.0%)
This commit is contained in:
Christopher Haster
2024-01-18 12:20:33 -06:00
parent 749f540a2b
commit 033d5545e9
1 changed files with 28 additions and 49 deletions
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lfs.c
+28 -49
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@@ -5144,6 +5144,18 @@ static void lfsr_removeopened(lfs_t *lfs, lfsr_opened_t *opened) {
}
}
static bool lfsr_mid_isopened(lfs_t *lfs, lfsr_smid_t mid) {
for (lfsr_opened_t *p = lfs->opened; p; p = p->next) {
// we really only care about regular open files here, all
// others are either transient (dirs) or fake (orphans)
if (p->type == LFS_TYPE_REG && p->mdir.mid == mid) {
return true;
}
}
return false;
}
/// Metadata-tree things ///
@@ -8236,18 +8248,7 @@ static int lfsr_fs_fixorphans(lfs_t *lfs) {
while (true) {
// is this mid opened? skip
bool notopened = true;
for (lfsr_opened_t *opened = lfs->opened;
opened;
opened = opened->next) {
if (opened->type == LFS_TYPE_REG
&& opened->mdir.mid == mdir.mid) {
notopened = false;
break;
}
}
if (notopened) {
if (!lfsr_mid_isopened(lfs, mdir.mid)) {
// are we an orphaned file?
err = lfsr_mdir_lookup(lfs, &mdir, mdir.mid, LFSR_TAG_ORPHAN,
NULL);
@@ -8577,16 +8578,7 @@ int lfsr_remove(lfs_t *lfs, const char *path) {
}
// are we removing an opened file?
bool zombie = false;
for (lfsr_opened_t *opened = lfs->opened;
opened;
opened = opened->next) {
if (opened->type == LFS_TYPE_REG
&& opened->mdir.mid == mdir.mid) {
zombie = true;
break;
}
}
bool zombie = lfsr_mid_isopened(lfs, mdir.mid);
// remove the metadata entry
err = lfsr_mdir_commit(lfs, &mdir, LFSR_ATTRS(
@@ -9376,35 +9368,22 @@ int lfsr_file_close(lfs_t *lfs, lfsr_file_t *file) {
lfs_free(file->buffer);
}
// never synced?
if (lfsr_f_isorphan(file->flags)) {
// are we orphaning a file?
//
// make sure we check _after_ removing ourselves
bool orphaned = true;
for (lfsr_opened_t *opened = lfs->opened;
opened;
opened = opened->next) {
if (opened->type == LFS_TYPE_REG
&& opened->mdir.mid == file->mdir.mid) {
orphaned = false;
break;
}
}
// are we orphaning a file?
//
// make sure we check _after_ removing ourselves
if (lfsr_f_isorphan(file->flags)
&& !lfsr_mid_isopened(lfs, file->mdir.mid)) {
// this gets a bit tricky, since we're not able to write to the
// filesystem if we're rdonly or desynced, fortunately we have
// a few tricks
if (orphaned) {
// this gets a bit tricky, since we're not able to write to the
// filesystem if we're rdonly or desynced, fortunately we have
// a few tricks
// first try to push onto our grm queue
if (lfsr_grm_count(&lfs->grm) < 2) {
lfsr_grm_pushrm(&lfs->grm, file->mdir.mid);
// first try to push onto our grm queue
if (lfsr_grm_count(&lfs->grm) < 2) {
lfsr_grm_pushrm(&lfs->grm, file->mdir.mid);
// fallback to just marking the filesystem as orphaned
} else {
lfs->hasorphans = true;
}
// fallback to just marking the filesystem as orphaned
} else {
lfs->hasorphans = true;
}
}