Debugging patch
Show some output as to what is going on.
Signed-off-by: Christoph Lameter <[email protected]>
---
fs/ramfs/inode.c | 1 +
mm/filemap.c | 8 ++++++++
2 files changed, 9 insertions(+)
Index: linux-2.6.21-rc7/fs/ramfs/inode.c
===================================================================
--- linux-2.6.21-rc7.orig/fs/ramfs/inode.c 2007-04-19 09:14:35.000000000 -0700
+++ linux-2.6.21-rc7/fs/ramfs/inode.c 2007-04-19 09:14:42.000000000 -0700
@@ -174,6 +174,7 @@ static int ramfs_fill_super(struct super
if (options && *options)
order = simple_strtoul(options, NULL, 10);
+ printk(KERN_ERR "ramfs_fill_super: '%s' order=%d\n", options, order);
sb->s_maxbytes = MAX_LFS_FILESIZE;
sb->s_blocksize = PAGE_CACHE_SIZE << order;
sb->s_blocksize_bits = order + PAGE_CACHE_SHIFT;
Index: linux-2.6.21-rc7/mm/filemap.c
===================================================================
--- linux-2.6.21-rc7.orig/mm/filemap.c 2007-04-19 09:14:16.000000000 -0700
+++ linux-2.6.21-rc7/mm/filemap.c 2007-04-19 09:16:45.000000000 -0700
@@ -121,6 +121,10 @@ void __remove_from_page_cache(struct pag
mapping->nrpages--;
__mod_zone_page_state(page_zone(page), NR_FILE_PAGES,
-(1 << mapping->order));
+
+ if (mapping->order)
+ printk(KERN_ERR "Removing page %p order %d from pagecache\n",
+ page, mapping->order);
}
void remove_from_page_cache(struct page *page)
@@ -451,6 +455,10 @@ int add_to_page_cache(struct page *page,
mapping->nrpages++;
__mod_zone_page_state(page_zone(page), NR_FILE_PAGES,
1 << mappig->order);
+
+ if (mapping->order)
+ printk(KERN_ERR "add_to_page_cache page %p order=%d\n",
+ page, mapping->order);
}
write_unlock_irq(&mapping->tree_lock);
radix_tree_preload_end();
-
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