tree 96572603989e027b559a3e117a773bb62ec434e3
parent 3089bf614c7e2fd441ee001e3ff3d18326f6f091
author Hugh Dickins <hughd@google.com> 1474687463 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1474741201 -0700

huge tmpfs: fix Committed_AS leak

Under swapping load on huge tmpfs, /proc/meminfo's Committed_AS grows
bigger and bigger: just a cosmetic issue for most users, but disabling
for those who run without overcommit (/proc/sys/vm/overcommit_memory 2).

shmem_uncharge() was forgetting to unaccount __vm_enough_memory's
charge, and shmem_charge() was forgetting it on the filesystem-full
error path.

Fixes: 800d8c63b2e9 ("shmem: add huge pages support")
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>