gfs2: Prevent direct-I/O write fallback errors from getting lost
[ Upstream commit 43a511c44e58e357a687d61a20cf5ef1dc9e5a7c ] When a direct I/O write falls entirely and falls back to buffered I/O and the buffered I/O fails, the write failed with return value 0 instead of the error number reported by the buffered I/O. Fix that. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -822,8 +822,11 @@ static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
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current->backing_dev_info = inode_to_bdi(inode);
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current->backing_dev_info = inode_to_bdi(inode);
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buffered = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);
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buffered = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);
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current->backing_dev_info = NULL;
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current->backing_dev_info = NULL;
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if (unlikely(buffered <= 0))
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if (unlikely(buffered <= 0)) {
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if (!ret)
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ret = buffered;
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goto out_unlock;
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goto out_unlock;
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}
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/*
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/*
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* We need to ensure that the page cache pages are written to
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* We need to ensure that the page cache pages are written to
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