diff options
Diffstat (limited to 'user')
| -rw-r--r-- | user/Maksym_Planeta.mdwn | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/user/Maksym_Planeta.mdwn b/user/Maksym_Planeta.mdwn index 502f3e20..80c94e0a 100644 --- a/user/Maksym_Planeta.mdwn +++ b/user/Maksym_Planeta.mdwn @@ -65,6 +65,22 @@ When fsx tries to read data kernel calls pager with seqno_memory_object_data_req 6.12.11 fsx works quite long and doesn't interrupt. I've stopped at 124784. Continued. It broke at 181091. +4.01.12 I've localized the problem. It is in these lines (starting approx. at hurd/mach-defpager/default_pager.c:1177): + + /* Now reduce the size of the direct map itself. We don't bother + with kalloc/kfree if it's not shrinking enough that kalloc.c + would actually use less. */ + if (PAGEMAP_SIZE (new_size) <= PAGEMAP_SIZE (old_size) / 2) + { + const dp_map_t old_mapptr = pager->map; + pager->map = (dp_map_t) kalloc (PAGEMAP_SIZE (new_size)); + memcpy (pager->map, old_mapptr, PAGEMAP_SIZE (old_size)); + my_tag |= 20; + kfree ((char *) old_mapptr, PAGEMAP_SIZE (old_size)); + } + +I didn't find out yet what is wrong here exactly, but when I exclude this code memory spoiling disappears. Still breaks at 181091. + ### Write own pager 6.11.11 Reading/writing for files that fit in vm_page_size works |