From: Erez Zadok <ezk@cs.sunysb.edu>
To: akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
viro@ftp.linux.org.uk, hch@infradead.org,
Erez Zadok <ezk@cs.sunysb.edu>, Hugh Dickins <hugh@veritas.com>
Subject: [PATCH 5/9] Unionfs: clear partial read in readpage
Date: Tue, 13 Nov 2007 05:10:24 -0500 [thread overview]
Message-ID: <11949486303084-git-send-email-ezk@cs.sunysb.edu> (raw)
In-Reply-To: <11949486283697-git-send-email-ezk@cs.sunysb.edu>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
---
fs/unionfs/mmap.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/fs/unionfs/mmap.c b/fs/unionfs/mmap.c
index 468dc61..bb00fd5 100644
--- a/fs/unionfs/mmap.c
+++ b/fs/unionfs/mmap.c
@@ -178,7 +178,8 @@ static int unionfs_do_readpage(struct file *file, struct page *page)
err = vfs_read(lower_file, page_data, PAGE_CACHE_SIZE,
&lower_file->f_pos);
set_fs(old_fs);
-
+ if (err >= 0 && err < PAGE_CACHE_SIZE)
+ memset(page_data + err, 0, PAGE_CACHE_SIZE - err);
kunmap(page);
if (err < 0)
--
1.5.2.2
next prev parent reply other threads:[~2007-11-13 10:13 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-13 10:10 [GIT PULL -mm] 0/9 Unionfs updates/cleanups/fixes Erez Zadok
2007-11-13 10:10 ` [PATCH 1/9] Unionfs: flush and release updates Erez Zadok
2007-11-13 10:10 ` [PATCH 2/9] Unionfs: use i_size wrappers Erez Zadok
2007-11-13 10:10 ` [PATCH 3/9] Unionfs: update cache-coherency detection heuristics Erez Zadok
2007-11-13 10:10 ` [PATCH 4/9] Unionfs: writepage updates Erez Zadok
2007-11-13 10:10 ` Erez Zadok [this message]
2007-11-13 10:10 ` [PATCH 6/9] Unionfs: debugging updates Erez Zadok
2007-11-13 10:10 ` [PATCH 7/9] Unionfs: remove unnecessary lower atime updates Erez Zadok
2007-11-13 10:10 ` [PATCH 8/9] Unionfs: fold do_readpage into unionfs_readpage Erez Zadok
2007-11-13 10:10 ` [PATCH 9/9] Unionfs: move debugging checks inside locks Erez Zadok
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