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| author | Steven Whitehouse <swhiteho@redhat.com> | 2006-09-28 14:29:59 +0200 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2006-09-28 14:29:59 +0200 |
| commit | 185a257f2f73bcd89050ad02da5bedbc28fc43fa (patch) | |
| tree | 5e32586114534ed3f2165614cba3d578f5d87307 /mm/mmap.c | |
| parent | [GFS2] Fix typo in last patch (diff) | |
| parent | Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/... (diff) | |
| download | linux-185a257f2f73bcd89050ad02da5bedbc28fc43fa.tar.xz linux-185a257f2f73bcd89050ad02da5bedbc28fc43fa.zip | |
Merge branch 'master' into gfs2
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index d799d896d74a..eea8eefd51a8 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -116,7 +116,7 @@ int __vm_enough_memory(long pages, int cap_sys_admin) * which are reclaimable, under pressure. The dentry * cache and most inode caches should fall into this */ - free += atomic_read(&slab_reclaim_pages); + free += global_page_state(NR_SLAB_RECLAIMABLE); /* * Leave the last 3% for root @@ -1105,12 +1105,6 @@ munmap_back: goto free_vma; } - /* Don't make the VMA automatically writable if it's shared, but the - * backer wishes to know when pages are first written to */ - if (vma->vm_ops && vma->vm_ops->page_mkwrite) - vma->vm_page_prot = - protection_map[vm_flags & (VM_READ|VM_WRITE|VM_EXEC)]; - /* We set VM_ACCOUNT in a shared mapping's vm_flags, to inform * shmem_zero_setup (perhaps called through /dev/zero's ->mmap) * that memory reservation must be checked; but that reservation @@ -1128,6 +1122,10 @@ munmap_back: pgoff = vma->vm_pgoff; vm_flags = vma->vm_flags; + if (vma_wants_writenotify(vma)) + vma->vm_page_prot = + protection_map[vm_flags & (VM_READ|VM_WRITE|VM_EXEC)]; + if (!file || !vma_merge(mm, prev, addr, vma->vm_end, vma->vm_flags, NULL, file, pgoff, vma_policy(vma))) { file = vma->vm_file; |