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-rw-r--r--fs/btrfs/file.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index d3afac292d67..36861b7a6757 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1840,7 +1840,15 @@ int btrfs_release_file(struct inode *inode, struct file *filp)
{
if (filp->private_data)
btrfs_ioctl_trans_end(filp);
- filemap_flush(inode->i_mapping);
+ /*
+ * ordered_data_close is set by settattr when we are about to truncate
+ * a file from a non-zero size to a zero size. This tries to
+ * flush down new bytes that may have been written if the
+ * application were using truncate to replace a file in place.
+ */
+ if (test_and_clear_bit(BTRFS_INODE_ORDERED_DATA_CLOSE,
+ &BTRFS_I(inode)->runtime_flags))
+ filemap_flush(inode->i_mapping);
return 0;
}
@@ -2088,10 +2096,9 @@ static int fill_holes(struct btrfs_trans_handle *trans, struct inode *inode,
goto out;
}
- if (hole_mergeable(inode, leaf, path->slots[0]+1, offset, end)) {
+ if (hole_mergeable(inode, leaf, path->slots[0], offset, end)) {
u64 num_bytes;
- path->slots[0]++;
key.offset = offset;
btrfs_set_item_key_safe(root, path, &key);
fi = btrfs_item_ptr(leaf, path->slots[0],
@@ -2216,7 +2223,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
goto out_only_mutex;
}
- lockstart = round_up(offset , BTRFS_I(inode)->root->sectorsize);
+ lockstart = round_up(offset, BTRFS_I(inode)->root->sectorsize);
lockend = round_down(offset + len,
BTRFS_I(inode)->root->sectorsize) - 1;
same_page = ((offset >> PAGE_CACHE_SHIFT) ==
@@ -2277,7 +2284,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
tail_start + tail_len, 0, 1);
if (ret)
goto out_only_mutex;
- }
+ }
}
}