From: Shaohua Li <shaohua.li@intel.com>
To: chris.mason@oracle.com, linux-btrfs@vger.kernel.org
Cc: zheng.yan@oracle.com
Subject: [PATCH] btrfs: btrfs_mark_extent_written writes correctly slot
Date: Thu, 11 Feb 2010 15:43:00 +0800 [thread overview]
Message-ID: <20100211074300.GA7469@sli10-desk.sh.intel.com> (raw)
My test do: fallocate a big file and do write. The file is 512M, but
after file write is done btrfs-debug-tree shows:
item 6 key (257 EXTENT_DATA 0) itemoff 3516 itemsize 53
extent data disk byte 1103101952 nr 536870912
extent data offset 0 nr 399634432 ram 536870912
extent compression 0
Looks like a regression introducted by
6c7d54ac87f338c479d9729e8392eca3f76e11e1, where we set wrong slot.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 9d08096..6ed434a 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -720,13 +720,15 @@ again:
inode->i_ino, orig_offset);
BUG_ON(ret);
}
- fi = btrfs_item_ptr(leaf, path->slots[0],
- struct btrfs_file_extent_item);
if (del_nr == 0) {
+ fi = btrfs_item_ptr(leaf, path->slots[0],
+ struct btrfs_file_extent_item);
btrfs_set_file_extent_type(leaf, fi,
BTRFS_FILE_EXTENT_REG);
btrfs_mark_buffer_dirty(leaf);
} else {
+ fi = btrfs_item_ptr(leaf, del_slot - 1,
+ struct btrfs_file_extent_item);
btrfs_set_file_extent_type(leaf, fi,
BTRFS_FILE_EXTENT_REG);
btrfs_set_file_extent_num_bytes(leaf, fi,
next reply other threads:[~2010-02-11 7:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-11 7:43 Shaohua Li [this message]
2010-02-11 7:50 ` [PATCH] btrfs: btrfs_mark_extent_written writes correctly slot Yan, Zheng
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