diff options
| -rw-r--r-- | mm/huge_memory.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 032702a4637b..58cabe6af33d 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -4114,6 +4114,18 @@ fail: remap_page(folio, 1 << old_order, ttu_flags); /* + * Drop the mapping while the inode is still pinned. @folio stays + * locked and present in the page cache until the loop below, so + * eviction cannot free the inode yet; @lock_at is not enough, it may + * be a tail beyond EOF that the split already dropped from the page + * cache. Nothing past this point may touch the inode or the mapping. + */ + if (mapping) { + i_mmap_unlock_read(mapping); + mapping = NULL; + } + + /* * Unlock all after-split folios except the one containing * @lock_at page. If @folio is not split, it will be kept locked. */ |