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vfs: vfs_iscacheable

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Matheus
2024-09-04 21:33:59 -03:00
parent be27fb6f3b
commit ee254a81e9
4 changed files with 22 additions and 13 deletions
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kernel-src/sys/syscalls/mmap.c
+2 -3
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@@ -78,10 +78,9 @@ syscallret_t syscall_mmap(context_t *context, void *hint, size_t len, int prot,
goto cleanup;
}
// not all charcter devices support mapping, so check if its supported
// (regular files and block devices go through the page cache)
// if the vnode is not cacheable, we need to make sure we can map it
// TODO move this check to vmm_map once the return value of mmap is fixed to return an errno
if (type == V_TYPE_CHDEV) {
if (vfs_iscacheable(file->vnode) == false) {
ret.errno = VOP_MMAP(file->vnode, VOP_MMAP_ADDRESS_MMAP_SUPPORTED, 0, 0, NULL);
if (ret.errno)
goto cleanup;