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Lock the traversal of the vm object list. Use TAILQ_FOREACH consistently.

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This commit is contained in:
Alan Cox 2004-01-02 19:29:31 +00:00
parent 49e9fc0a0d
commit 277b62040d
2 changed files with 5 additions and 2 deletions
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2
sys/compat/linprocfs/linprocfs.c
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@ -143,9 +143,11 @@ linprocfs_domeminfo(PFS_FILL_ARGS)
swapused = j * PAGE_SIZE;
swapfree = swaptotal - swapused;
memshared = 0;
mtx_lock(&vm_object_list_mtx);
TAILQ_FOREACH(object, &vm_object_list, object_list)
if (object->shadow_count > 1)
memshared += object->resident_page_count;
mtx_unlock(&vm_object_list_mtx);
memshared *= PAGE_SIZE;
/*
* We'd love to be able to write:

5
sys/compat/linux/linux_misc.c
View File

@ -145,10 +145,11 @@ linux_sysinfo(struct thread *td, struct linux_sysinfo_args *args)
sysinfo.freeram = sysinfo.totalram - cnt.v_wire_count * PAGE_SIZE;
sysinfo.sharedram = 0;
for (object = TAILQ_FIRST(&vm_object_list); object != NULL;
object = TAILQ_NEXT(object, object_list))
mtx_lock(&vm_object_list_mtx);
TAILQ_FOREACH(object, &vm_object_list, object_list)
if (object->shadow_count > 1)
sysinfo.sharedram += object->resident_page_count;
mtx_unlock(&vm_object_list_mtx);
sysinfo.sharedram *= PAGE_SIZE;
sysinfo.bufferram = 0;