From: Hugh Dickins <hughd@google.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Dave Chinner <david@fromorbit.com>, Ben Myers <bpm@sgi.com>,
xfs@oss.sgi.com, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org
Subject: [PATCH 1/2] xfs: hole-punch use truncate_pagecache_range
Date: Sun, 13 May 2012 13:50:06 -0700 (PDT) [thread overview]
Message-ID: <alpine.LSU.2.00.1205131347120.1547@eggly.anvils> (raw)
When truncating a file, we unmap pages from userspace first, as that's
usually more efficient than relying, page by page, on the fallback in
truncate_inode_page() - particularly if the file is mapped many times.
Do the same when punching a hole: 3.4 added truncate_pagecache_range()
to do the unmap and trunc, so use it in xfs_flushinval_pages(), instead
of calling truncate_inode_pages_range() directly.
Should xfs_tosspages() be using it too? I don't know: left unchanged.
Signed-off-by: Hugh Dickins <hughd@google.com>
---
fs/xfs/xfs_fs_subr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- next-20120511/fs/xfs/xfs_fs_subr.c 2012-01-17 20:42:07.879627688 -0800
+++ linux/fs/xfs/xfs_fs_subr.c 2012-05-12 18:01:14.988654723 -0700
@@ -53,7 +53,7 @@ xfs_flushinval_pages(
ret = filemap_write_and_wait_range(mapping, first,
last == -1 ? LLONG_MAX : last);
if (!ret)
- truncate_inode_pages_range(mapping, first, last);
+ truncate_pagecache_range(VFS_I(ip), first, last);
return -ret;
}
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next reply other threads:[~2012-05-13 20:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-13 20:50 Hugh Dickins [this message]
2012-05-13 20:51 ` [PATCH 2/2] xfs: hole-punch retaining cache beyond Hugh Dickins
2012-05-15 6:58 ` Christoph Hellwig
2012-05-15 6:57 ` [PATCH 1/2] xfs: hole-punch use truncate_pagecache_range Christoph Hellwig
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