Commit 5c0bb97c authored by Lukas Czerner's avatar Lukas Czerner Committed by Theodore Ts'o

gfs2: use ->invalidatepage() length argument

->invalidatepage() aop now accepts range to invalidate so we can make
use of it in gfs2_invalidatepage().
Signed-off-by: default avatarLukas Czerner <lczerner@redhat.com>
Acked-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
Cc: cluster-devel@redhat.com
parent 569d39fc
......@@ -948,24 +948,29 @@ static void gfs2_invalidatepage(struct page *page, unsigned int offset,
unsigned int length)
{
struct gfs2_sbd *sdp = GFS2_SB(page->mapping->host);
unsigned int stop = offset + length;
int partial_page = (offset || length < PAGE_CACHE_SIZE);
struct buffer_head *bh, *head;
unsigned long pos = 0;
BUG_ON(!PageLocked(page));
if (offset == 0)
if (!partial_page)
ClearPageChecked(page);
if (!page_has_buffers(page))
goto out;
bh = head = page_buffers(page);
do {
if (pos + bh->b_size > stop)
return;
if (offset <= pos)
gfs2_discard(sdp, bh);
pos += bh->b_size;
bh = bh->b_this_page;
} while (bh != head);
out:
if (offset == 0)
if (!partial_page)
try_to_release_page(page, 0);
}
......
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