From: Wang Xiaoguang <wangxg.f...@cn.fujitsu.com>
Introduce inode_need_dedup() to implement per-file online dedup control.
Signed-off-by: Wang Xiaoguang <wangxg.f...@cn.fujitsu.com>
---
fs/btrfs/inode.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 759b03d..25af469 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -676,6 +676,18 @@ static void free_async_extent_pages(struct async_extent
*async_extent)
async_extent->pages = NULL;
}
+static inline int inode_need_dedup(struct btrfs_fs_info *fs_info,
+ struct inode *inode)
+{
+ if (!fs_info->dedup_enabled)
+ return 0;
+
+ if (BTRFS_I(inode)->flags & BTRFS_INODE_NODEDUP)
+ return 0;
+
+ return 1;
+}
+
/*
* phase two of compressed writeback. This is the ordered portion
* of the code, which only gets called in the order the work was
@@ -1637,7 +1649,8 @@ static int run_delalloc_range(struct inode *inode, struct
page *locked_page,
} else if (BTRFS_I(inode)->flags & BTRFS_INODE_PREALLOC && !force_cow) {
ret = run_delalloc_nocow(inode, locked_page, start, end,
page_started, 0, nr_written);
- } else if (!inode_need_compress(inode) && !fs_info->dedup_enabled) {
+ } else if (!inode_need_compress(inode) &&
+ !inode_need_dedup(fs_info, inode)) {
ret = cow_file_range(inode, locked_page, start, end,
page_started, nr_written, 1, NULL);
} else {
--
2.7.0
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
