AcoSail/kernel_optimize_test
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f2fs: issue cache flush on direct IO

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Under direct IO path with O_(D)SYNC, it needs to set proper APPEND or UPDATE
flags, so taht f2fs_sync_file can make its data safe.

Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-04-18 17:07:44 -04:00
parent 608514deba
commit 6bfc49197e
1 changed files with 9 additions and 2 deletions
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11
fs/f2fs/data.c
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@ -673,6 +673,9 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
err = reserve_new_block(&dn);
} else {
err = __allocate_data_block(&dn);
if (!err)
set_inode_flag(F2FS_I(inode),
FI_APPEND_WRITE);
}
if (err)
goto sync_out;
@ -1685,8 +1688,12 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
trace_f2fs_direct_IO_enter(inode, offset, count, iov_iter_rw(iter));
err = blockdev_direct_IO(iocb, inode, iter, offset, get_data_block_dio);
if (err < 0 && iov_iter_rw(iter) == WRITE)
f2fs_write_failed(mapping, offset + count);
if (iov_iter_rw(iter) == WRITE) {
if (err > 0)
set_inode_flag(F2FS_I(inode), FI_UPDATE_WRITE);
else if (err < 0)
f2fs_write_failed(mapping, offset + count);
}
trace_f2fs_direct_IO_exit(inode, offset, count, iov_iter_rw(iter), err);