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Diffstat (limited to 'fs/gfs2/bmap.c')
-rw-r--r--fs/gfs2/bmap.c48
1 files changed, 36 insertions, 12 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 0f69fbd4af66..ed425d30e636 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -56,7 +56,6 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,
u64 block, struct page *page)
{
struct inode *inode = &ip->i_inode;
- struct buffer_head *bh;
int release = 0;
if (!page || page->index) {
@@ -80,20 +79,21 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,
SetPageUptodate(page);
}
- if (!page_has_buffers(page))
- create_empty_buffers(page, BIT(inode->i_blkbits),
- BIT(BH_Uptodate));
+ if (gfs2_is_jdata(ip)) {
+ struct buffer_head *bh;
- bh = page_buffers(page);
+ if (!page_has_buffers(page))
+ create_empty_buffers(page, BIT(inode->i_blkbits),
+ BIT(BH_Uptodate));
- if (!buffer_mapped(bh))
- map_bh(bh, inode->i_sb, block);
+ bh = page_buffers(page);
+ if (!buffer_mapped(bh))
+ map_bh(bh, inode->i_sb, block);
- set_buffer_uptodate(bh);
- if (gfs2_is_jdata(ip))
+ set_buffer_uptodate(bh);
gfs2_trans_add_data(ip->i_gl, bh);
- else {
- mark_buffer_dirty(bh);
+ } else {
+ set_page_dirty(page);
gfs2_ordered_add_inode(ip);
}
@@ -1158,7 +1158,8 @@ static int gfs2_iomap_begin(struct inode *inode, loff_t pos, loff_t length,
struct metapath mp = { .mp_aheight = 1, };
int ret;
- iomap->flags |= IOMAP_F_BUFFER_HEAD;
+ if (gfs2_is_jdata(ip))
+ iomap->flags |= IOMAP_F_BUFFER_HEAD;
trace_gfs2_iomap_start(ip, pos, length, flags);
if (gfs2_iomap_need_write_lock(flags)) {
@@ -2518,3 +2519,26 @@ out:
gfs2_trans_end(sdp);
return error;
}
+
+static int gfs2_map_blocks(struct iomap_writepage_ctx *wpc, struct inode *inode,
+ loff_t offset)
+{
+ struct metapath mp = { .mp_aheight = 1, };
+ int ret;
+
+ if (WARN_ON_ONCE(gfs2_is_stuffed(GFS2_I(inode))))
+ return -EIO;
+
+ if (offset >= wpc->iomap.offset &&
+ offset < wpc->iomap.offset + wpc->iomap.length)
+ return 0;
+
+ memset(&wpc->iomap, 0, sizeof(wpc->iomap));
+ ret = gfs2_iomap_get(inode, offset, INT_MAX, 0, &wpc->iomap, &mp);
+ release_metapath(&mp);
+ return ret;
+}
+
+const struct iomap_writeback_ops gfs2_writeback_ops = {
+ .map_blocks = gfs2_map_blocks,
+};