lib: chunkio: fixed file mapping size

This bug had already been fixed in upstream, the round operation causes the mapping size (and thus alloc size) to be larger than the file size which means there is a memory area that's not backed by the file which in some cases such as XFS causes data loss. Signed-off-by: Leonardo Alminana <[email protected]>
fluent · Sep 12, 2023 · 4c7f71a · 4c7f71a
1 parent 6ad569e
commit 4c7f71a
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/lib/chunkio/src/cio_file.c b/lib/chunkio/src/cio_file.c
@@ -390,7 +390,6 @@ static int mmap_file(struct cio_ctx *ctx, struct cio_chunk *ch, size_t size)
     }
 
     /* Map the file */
-    size = ROUND_UP(size, ctx->page_size);
     cf->map = mmap(0, size, oflags, MAP_SHARED, cf->fd, 0);
     if (cf->map == MAP_FAILED) {
         cio_errno();