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f2fs: still write data if preallocate only partial blocks

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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>
This commit is contained in:
Sheng Yong 2017-11-22 18:23:39 +08:00 committed by Jaegeuk Kim
parent f6df8f234e
commit 25006645d2
1 changed files with 8 additions and 2 deletions
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10
fs/f2fs/data.c
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@ -862,8 +862,14 @@ int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from)
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;
}