Attachment 161356 Details for Bug 252191 – The updated patch

[patch] The updated patch

for-bob.diff (text/plain), 4.48 KB, created by Steve Whitehouse on 2007-08-15 13:38:17 UTC

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Creator: Steve Whitehouse

Created: 2007-08-15 13:38:17 UTC

Size: 4.48 KB

patch

obsolete

>diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
>index 00ab6c0..d0e6b42 100644
>--- a/fs/gfs2/log.c
>+++ b/fs/gfs2/log.c
>@@ -229,8 +229,10 @@ static void gfs2_ail2_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
> 		list_del(&bd->bd_ail_st_list);
> 		list_del(&bd->bd_ail_gl_list);
> 		atomic_dec(&bd->bd_gl->gl_ail_count);
>-		bh_ip = GFS2_I(bd->bd_bh->b_page->mapping->host);
>-		gfs2_meta_cache_flush(bh_ip);
>+		if (bd->bd_bh->b_page->mapping) {
>+			bh_ip = GFS2_I(bd->bd_bh->b_page->mapping->host);
>+			gfs2_meta_cache_flush(bh_ip);
>+		}
> 		brelse(bd->bd_bh);
> 	}
> }
>diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
>index 42a5f58..2f8294f 100644
>--- a/fs/gfs2/ops_address.c
>+++ b/fs/gfs2/ops_address.c
>@@ -616,58 +616,13 @@ static sector_t gfs2_bmap(struct address_space *mapping, sector_t lblock)
> 	return dblock;
> }
> 
>-static void discard_buffer(struct gfs2_sbd *sdp, struct buffer_head *bh)
>-{
>-	struct gfs2_bufdata *bd;
>-
>-	gfs2_log_lock(sdp);
>-	bd = bh->b_private;
>-	if (bd) {
>-		bd->bd_bh = NULL;
>-		bh->b_private = NULL;
>-		if (!bd->bd_ail && list_empty(&bd->bd_le.le_list))
>-			kmem_cache_free(gfs2_bufdata_cachep, bd);
>-	}
>-	gfs2_log_unlock(sdp);
>-
>-	lock_buffer(bh);
>-	clear_buffer_dirty(bh);
>-	bh->b_bdev = NULL;
>-	clear_buffer_mapped(bh);
>-	clear_buffer_req(bh);
>-	clear_buffer_new(bh);
>-	clear_buffer_delay(bh);
>-	unlock_buffer(bh);
>-}
>-
> static void gfs2_invalidatepage(struct page *page, unsigned long offset)
> {
>-	struct gfs2_sbd *sdp = GFS2_SB(page->mapping->host);
>-	struct buffer_head *head, *bh, *next;
>-	unsigned int curr_off = 0;
>-
> 	BUG_ON(!PageLocked(page));
> 	if (offset == 0)
> 		ClearPageChecked(page);
>-	if (!page_has_buffers(page))
>-		return;
>-
>-	bh = head = page_buffers(page);
>-	do {
>-		unsigned int next_off = curr_off + bh->b_size;
>-		next = bh->b_this_page;
>-
>-		if (offset <= curr_off)
>-			discard_buffer(sdp, bh);
>-
>-		curr_off = next_off;
>-		bh = next;
>-	} while (bh != head);
>-
>-	if (!offset)
>-		try_to_release_page(page, 0);
> 
>-	return;
>+	block_invalidatepage(page, offset);
> }
> 
> /**
>@@ -736,59 +691,6 @@ out:
> }
> 
> /**
>- * stuck_releasepage - We're stuck in gfs2_releasepage().  Print stuff out.
>- * @bh: the buffer we're stuck on
>- *
>- */
>-
>-static void stuck_releasepage(struct buffer_head *bh)
>-{
>-	struct inode *inode = bh->b_page->mapping->host;
>-	struct gfs2_sbd *sdp = inode->i_sb->s_fs_info;
>-	struct gfs2_bufdata *bd = bh->b_private;
>-	struct gfs2_glock *gl;
>-static unsigned limit = 0;
>-
>-	if (limit > 3)
>-		return;
>-	limit++;
>-
>-	fs_warn(sdp, "stuck in gfs2_releasepage() %p\n", inode);
>-	fs_warn(sdp, "blkno = %llu, bh->b_count = %d\n",
>-		(unsigned long long)bh->b_blocknr, atomic_read(&bh->b_count));
>-	fs_warn(sdp, "pinned = %u\n", buffer_pinned(bh));
>-	fs_warn(sdp, "bh->b_private = %s\n", (bd) ? "!NULL" : "NULL");
>-
>-	if (!bd)
>-		return;
>-
>-	gl = bd->bd_gl;
>-
>-	fs_warn(sdp, "gl = (%u, %llu)\n",
>-		gl->gl_name.ln_type, (unsigned long long)gl->gl_name.ln_number);
>-
>-	fs_warn(sdp, "bd_list_tr = %s, bd_le.le_list = %s\n",
>-		(list_empty(&bd->bd_list_tr)) ? "no" : "yes",
>-		(list_empty(&bd->bd_le.le_list)) ? "no" : "yes");
>-
>-	if (gl->gl_ops == &gfs2_inode_glops) {
>-		struct gfs2_inode *ip = gl->gl_object;
>-		unsigned int x;
>-
>-		if (!ip)
>-			return;
>-
>-		fs_warn(sdp, "ip = %llu %llu\n",
>-			(unsigned long long)ip->i_no_formal_ino,
>-			(unsigned long long)ip->i_no_addr);
>-
>-		for (x = 0; x < GFS2_MAX_META_HEIGHT; x++)
>-			fs_warn(sdp, "ip->i_cache[%u] = %s\n",
>-				x, (ip->i_cache[x]) ? "!NULL" : "NULL");
>-	}
>-}
>-
>-/**
>  * gfs2_releasepage - free the metadata associated with a page
>  * @page: the page that's being released
>  * @gfp_mask: passed from Linux VFS, ignored by us
>@@ -805,32 +707,22 @@ int gfs2_releasepage(struct page *page, gfp_t gfp_mask)
> 	struct gfs2_sbd *sdp = aspace->i_sb->s_fs_info;
> 	struct buffer_head *bh, *head;
> 	struct gfs2_bufdata *bd;
>-	unsigned long t = jiffies + gfs2_tune_get(sdp, gt_stall_secs) * HZ;
> 
> 	if (!page_has_buffers(page))
> 		goto out;
> 
> 	head = bh = page_buffers(page);
> 	do {
>-		while (atomic_read(&bh->b_count)) {
>-			if (!atomic_read(&aspace->i_writecount))
>-				return 0;
>-
>-			if (!(gfp_mask & __GFP_WAIT))
>-				return 0;
>-
>-			if (time_after_eq(jiffies, t)) {
>-				stuck_releasepage(bh);
>-				/* should we withdraw here? */
>-				return 0;
>-			}
>-
>-			yield();
>-		}
>-
>+		if (atomic_read(&bh->b_count))
>+			return 0;
>+		
> 		gfs2_assert_warn(sdp, !buffer_pinned(bh));
> 		gfs2_assert_warn(sdp, !buffer_dirty(bh));
>+		bh = bh->b_this_page;
>+	} while(bh != head);
> 
>+	head = bh = page_buffers(page);
>+	do {
> 		gfs2_log_lock(sdp);
> 		bd = bh->b_private;
> 		if (bd) {

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Attachments on bug 252191: 161347 | 161356 | 161370 | 161376 | 161639