Commit 35b94063 authored Nov 22, 2017 by Sheng Yong Committed by Jaegeuk Kim Feb 10, 2018

f2fs: still write data if preallocate only partial blocks



If there is not enough space left, f2fs_preallocate_blocks may only
preallocte partial blocks. As a result, the write operation fails
but i_blocks is not 0.  To avoid this, f2fs should write data in
non-preallocation way and write as many data as the size of i_blocks.

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

parent b6453fcb

fs/f2fs/data.c

+8 −2

Original line number	Diff line number	Diff line
		@@ -861,8 +861,14 @@ int f2fs_preallocate_blocks(struct inode *inode, loff_t pos,
		if (err)
		return err;
		}
		if (!f2fs_has_inline_data(inode))
		return f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
		if (!f2fs_has_inline_data(inode)) {
		err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
		if (map.m_len > 0 && err == -ENOSPC) {
		set_inode_flag(inode, FI_NO_PREALLOC);
		err = 0;
		}
		return err;
		}
		return err;
		}