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writeback: redirty page on error

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Matheus
2026-08-20 23:35:54 -03:00
parent bb019193b4
commit 91ae51f385
1 changed files with 7 additions and 1 deletions
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kernel-src/mm/writeback.c
+7 -1
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@@ -113,7 +113,6 @@ int mm_cache_sync_vnode(vnode_t *vnode) {
VOP_LOCK(vnode); VOP_LOCK(vnode);
// TODO: remark as dirty on error
int error = 0; int error = 0;
if ((__atomic_load_n(&page->flags, __ATOMIC_RELAXED) & PAGE_FLAGS_TRUNCATED) == 0) if ((__atomic_load_n(&page->flags, __ATOMIC_RELAXED) & PAGE_FLAGS_TRUNCATED) == 0)
error = VOP_PUTPAGE(vnode, page->offset, page); error = VOP_PUTPAGE(vnode, page->offset, page);
@@ -121,6 +120,8 @@ int mm_cache_sync_vnode(vnode_t *vnode) {
VOP_UNLOCK(vnode); VOP_UNLOCK(vnode);
if (first_error == 0) if (first_error == 0)
first_error = error; first_error = error;
if (error)
__atomic_fetch_or(&page->flags, PAGE_FLAGS_DIRTY, __ATOMIC_RELEASE);
int flags = __atomic_and_fetch(&page->flags, ~PAGE_FLAGS_SYNCING, __ATOMIC_ACQUIRE); int flags = __atomic_and_fetch(&page->flags, ~PAGE_FLAGS_SYNCING, __ATOMIC_ACQUIRE);
if (flags & PAGE_FLAGS_DIRTY) { if (flags & PAGE_FLAGS_DIRTY) {
@@ -130,6 +131,11 @@ int mm_cache_sync_vnode(vnode_t *vnode) {
} else { } else {
mm_release_page(mm_get_page_address(page)); mm_release_page(mm_get_page_address(page));
} }
if (error) {
MUTEX_RELEASE(&vnode->writeback_mutex);
return first_error;
}
} }
} }