Uh, oh, removed too much. We obviously need to set the PG_uptodate flag
in simple_readpage(). Sorry about that. Updated patch follows.
From: Pekka Enberg <[email protected]>
This patch removes the unnecessary PageUptodate check from simple_readpage.
The only two callers for ->readpage that don't have explicit PageUptodate
check are read_cache_pages and page_cache_read which operate on newly
allocated pages which don't have the flag set.
Signed-off-by: Pekka Enberg <[email protected]>
---
fs/libfs.c | 4 ----
1 files changed, 0 insertions(+), 4 deletions(-)
diff --git a/fs/libfs.c b/fs/libfs.c
index ac02ea6..0d2cc61 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -319,15 +319,11 @@ int simple_readpage(struct file *file, s
{
void *kaddr;
- if (PageUptodate(page))
- goto out;
-
kaddr = kmap_atomic(page, KM_USER0);
memset(kaddr, 0, PAGE_CACHE_SIZE);
kunmap_atomic(kaddr, KM_USER0);
flush_dcache_page(page);
SetPageUptodate(page);
-out:
unlock_page(page);
return 0;
}
--
1.4.1
-
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