diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-07-07 10:17:56 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-07-07 10:17:56 +0200 |
| commit | f1615bbe9be4def59c3b3eaddb60722efeed16c2 (patch) | |
| tree | ca3020e65447576fc1826e819651e6ba072030b5 /mm/msync.c | |
| parent | cfb3c0ab0903abb6ea5215b37eebd9c2a1f057eb (diff) | |
| parent | cd3de83f147601356395b57a8673e9c5ff1e59d1 (diff) | |
Merge tag 'v3.16-rc4' into drm-intel-next-queued
Due to Dave's vacation drm-next hasn't opened yet for 3.17 so I
couldn't move my drm-intel-next queue forward yet like I usually do.
Just pull in the latest upstream -rc to unblock patch merging - I
don't want to needlessly rebase my current patch pile really and void
all the testing we've done already.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'mm/msync.c')
| -rw-r--r-- | mm/msync.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/mm/msync.c b/mm/msync.c index 632df4527c0..992a1673d48 100644 --- a/mm/msync.c +++ b/mm/msync.c @@ -58,6 +58,7 @@ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags) vma = find_vma(mm, start); for (;;) { struct file *file; + loff_t fstart, fend; /* Still start < end. */ error = -ENOMEM; @@ -77,12 +78,18 @@ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags) goto out_unlock; } file = vma->vm_file; + fstart = (start - vma->vm_start) + + ((loff_t)vma->vm_pgoff << PAGE_SHIFT); + fend = fstart + (min(end, vma->vm_end) - start) - 1; start = vma->vm_end; if ((flags & MS_SYNC) && file && (vma->vm_flags & VM_SHARED)) { get_file(file); up_read(&mm->mmap_sem); - error = vfs_fsync(file, 0); + if (vma->vm_flags & VM_NONLINEAR) + error = vfs_fsync(file, 1); + else + error = vfs_fsync_range(file, fstart, fend, 1); fput(file); if (error || start >= end) goto out; |