openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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: Lukas Czerner <lczerner@redhat.com>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: cluster-devel@redhat.com
This commit is contained in:
Lukas Czerner 2013-05-21 23:58:49 -04:00 committed by Theodore Ts'o
parent 569d39fc3e
commit 5c0bb97ce0
1 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
fs/gfs2/aops.c
View File

@ -948,24 +948,29 @@ static void gfs2_invalidatepage(struct page *page, unsigned int offset,
unsigned int length) unsigned int length)
{ {
struct gfs2_sbd *sdp = GFS2_SB(page->mapping->host); 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; struct buffer_head *bh, *head;
unsigned long pos = 0; unsigned long pos = 0;
BUG_ON(!PageLocked(page)); BUG_ON(!PageLocked(page));
if (offset == 0) if (!partial_page)
ClearPageChecked(page); ClearPageChecked(page);
if (!page_has_buffers(page)) if (!page_has_buffers(page))
goto out; goto out;
bh = head = page_buffers(page); bh = head = page_buffers(page);
do { do {
if (pos + bh->b_size > stop)
return;
if (offset <= pos) if (offset <= pos)
gfs2_discard(sdp, bh); gfs2_discard(sdp, bh);
pos += bh->b_size; pos += bh->b_size;
bh = bh->b_this_page; bh = bh->b_this_page;
} while (bh != head); } while (bh != head);
out: out:
if (offset == 0) if (!partial_page)
try_to_release_page(page, 0); try_to_release_page(page, 0);
} }